windows and it was sergeant weichel's demeanor and the way he handled children. he would ensure that ever child received something, with whether it's the smallest thing as a pencil or a booklet to write in. >> reporter: during those days back home, everyone could see his own children meant everything to him. >> just excited. these are the most important things to me. my kids. so i'm glad to see them on the holidays. >> reporter: he was pro moted posthumously to sergeant and he is survivored business hi fiance and three children. barbara starr, cnn. top of the hour, i'm suzanne malveaux. we're able to hear from president obama and the leersd of canada and mexico. they're meeting at the white house. he's with the canadian prime minister and the mexican if the. the t meeting critical as they discuss the economy. jobs, trades, energy as well as our security. we're expecting to hear there them in less than 15 minutes. we'll bring to it you live. and a passenger plane crashed in a region of siberia. 31 people were killed including the 4 crew members. a dozen survivors are hospitalized in intensive care. the twin engine plane burst into flames, broke into pieces. britain, france, canada will investigate. the republican candidates back out on trail today ahead of tomorrow in wisconsin, maryland, and d.c. polls showing mitt romney is the favorite, winning all three contests. but newt gingrich and rick santorum say thai staying in the race until romney gets the magic number of delegates, 1144. keep an extra close eye on your credit and debit statements for march. the processing company global payment is trying hard to find out how the hackers pulled it off. the names, addresses, social security numbers all not affected. want to go back to the summit meeting at the white house. president obama talking with two top u.s. allies. canadian prime minister steefb harper and mexican president calderone. i want to bring in athena jones. the last time they were all together was 2009. we though that president obama and the prime minister of canada like each other. obama refusing to green-light the keystone pipeline, would have delivered 7,000 barrels a day from canada is creating tension. how do they get beyond that. >> that's a big question everyone's asking. at this point, it's not clear how the issue gets resolved. from the obama administration standpoint, they said, it's not over. yes, they denied transcanada a permit to go through nebraska. but they said once there's an alternative route, it's still up for discussion. it's been a big political issue that the obama administration has had to deal with at a time when gas prices are so high. it came up today. they're still in discussions right now, as far as we know. the press conference is pushed back a little bit. they're in their lunch meeting now, we understand. this is something that could come up in the press conference. one question from each of the countries, each of the countries. we'll see if that comes up. >> just one in usually there are two on both sides. let's talk about mexico. president obama has been aggressive when it comes to the war on drugs. you have more lleyton american leaders who want to legalize the drug trade to stop the violence. how important is it that the president and calderone are on the same page? >> they have to work on it on the issue. the war that president calderon launched against drug cartels has cost tens of thousands mexican lives. there's so discussion that you have heard about the whole issue of maybe decriminalizing, legalizing some drugs. vice president biden was in mexico and honduras in march. he said, it's worth talking about legalizing drugs. but he kind of in the same breath said he was opposed to it. he told the reporters, legalizing drugs impacts on the health costs of a country, mortality rates. it's worth discussing. there's though possibility that the obama-biden administration will change a policy on legalization. i don't think we would hear news on that today. we heard that a month ago. >> we know that this is a critical time for all three leaders. president obama, as well in the middle of a campaign here. what do you think would be the successful -- would define a successful summit for the president? >> one of the big issues here is x economic cooperation. we send almost a third of our exports to canada. the economies are inextri tritr linked. we can expect them to talk about reaching agreements when it comes to working on things to create job, boost global competitiveness of north america as a region. from the mexican side, president calderon plans to bring up the transpacific partnership. canada and mexico have been left out of that. from the mexican government's statement yesterday, we know this is something he plans to bring up. lots and lots on the table. not a lot of chance to talk about it afterwards. we can bet the three journalists will ask as many questions as they can. >> they'll get three questions within one, i guarantee it. >> absolutely. >> trying to talk about the deliverables in washington. just the message they can all get on the same page there. that's good enough sometime. all athena, thank you very much. new developments now in the fatal shooting of trayvon martin. today, the boy's parents are going to formally ask the justice department to review what the state prosecutor did. they don't know why he didn't bring charges against george zimmerman. george howell is joining us from sanford. you have a different state attorney now handling this case. you have the justice department investigating this. do we know why the parents are seeking another investigation? >> they're requesting that the department of justice look into the possibility that the state toerm, attorney, somehow did he interfere with the lead investigator? we have a producer who is keeping track on this to determine when this is filed today. we know it should be formally written up and field today and the attorneys say they should hear something back from the doj later today. keep in mind this is on top of another investigation already happening by the doj into this police department, the city manager has asked that doj look into the department. there's been a long history, according to many in the community, of distrust between the police department and the community. so they're looking into that, also. >> and, george, talk a bit about the 911 tapes. we now have audio experts weighing in on the screams that you hear on the tapes. >> we have two. audio experts. they first spoke to "the orlando sentinel." they say they're quite certain that the voice that we hear in that 91 audio, the skreems for help, that it's not coming from george zimmerman. here's what they had to say this morning. >> this is not an exact science here. but in your opinion, what is -- is there a chance this is not zimmerman's voice? >> there's a huge chance this is not zimmerman's voice. as a matter of fact, after 28 years of doing this, i would put my reputation on the line and say this is not george zimmerman screaming. >> can you put a percentage on that? >> boy, that's a tough question. i'll say about 95. >> but it is important to point out that these analyses -- it's not 100% accurate. that's one thing to point out. looking back to the police report, the investigator there, he did say he did believe that the voice was coming from george zimmerman. that zimmerman claimed to sch em for help. audio experts are looking into it. they don't believe it's george zimmerman's voice on the recording. >> as we learn more about the investigation, about the tapes, do you get a sense that people, the protesters that have been seeking justice here in the case, that this is getting stronger, turning into a movement. or do you think as we get caught up in the minutiae of all this that it's dying down? >> as we get ought up in the minuti minutiae, more and more people seem to follow it. new details are coming out. at the end to ever day, people are trying to piece together what happened on february 26th. this audio -- erks pert that we've been looking into, that's one thing people have focused in on. we won't find out until the state attorney released her decision as to whether zimmerman could be charged in this case. >> all right, george. thank you. let's run down some of the stories we're covering over the next hour. first, he's still not locked up a nomination. folks with still trying to figure out who his running mate might be. and whitney houston's daughter following in her mother's celebrity spotlight. we'll hear from the president live about a new energy partnership with our neighbors from the north and south. do you have anything for a headache...like excedrin... bayer aspirin... ohh, no no no. i'm not having a heart attack, it's my head. this is made for pain. [ male announcer ] bayer advanced aspirin enters the bloodstream fast, and rushes extra strength relief to the sight of your pain. feel better? yeah...thanks for the tip! i worked at the colorado springs mail processing plant for 22 years. we processed on a given day about a million pieces of mail. checks, newspapers, bills. a lot of people get their medications only through the mail. small businesses depend on this processing plant. they want to shut down 3000 post offices, cut 100,000 jobs. they're gonna be putting people out of work everywhere. the american people depend on the postal service. with odor free aspercreme. powerful medicine relieves pain fast, with no odor. so all you notice is relief. aspercreme. we've got some breaking news here. developing out of syria here. news coming that the syrian am baz dor to the united nations potentially accepting a deadline for the u.n. peace deal being brokered. want to bring in richard rort. what do we know about syria's position and the latest information? >> okay, here's what's happened. the u.n. arab league special enjoy, kofi annan. he's been conducting talks in syria. syria says it's ready to start withdrawing troops from population center and completely withdraw by april 10th. syria's ambassador acknowledging this. he says the opposition must start doing the same. there's skepticism. and to observe and watch this does occur, ambassador rice of the united states says koef ifi annan is working on a technical team. >> mr. annan asked them to support the april 10 deadline and to begin consideration of a potential u.n. monitoring mission. >> so there's still a lot to be done, though. there's still three points not completed by the assad regime. humanitarian corridors. a two-hour pause in fighting, access to the media. still a note of caution to watch what happens in syria if that can be observed. there's some concern they will use the time before april 10th to increase the astacks on civilians. >> what is the credibility of syr syria's ambassador to the u.n.? does he have credibility within the group? >> well, he's very strongly tied to the assad regime. it's syrian foreign minister that let kofi annan know what thai doing. russia, china, probably putting some heat on the damascus reveem. regime. we have seen this in other cases. they say a lot of things, sometimes it doesn't happen. we'll have to watch what happens by april 10th. if not sooner. >> right around the corn person when do we suspect the monitoring mission will take place? i imagine within days? >> i don't think it will be able to be started by then. the security counscil has to approve it. they've been working on getting the technicalities going. this mission may put the final touches on it. there's a lot of territory to cover. critics say there's not enough people to watch all of this. >> i assume it's too early to see if there's refraction the opposition. is anybody talking about that yet? >> no, the other day, i mean, their main mantra is assad has to step down. the worlding of the plan is softer than arab league plan. the annan plan talks about syrian-led transition. included in the process. that's the only way the u.s. and russia have gotten china to hang on. they feel assad being forced to leave office is a nonstarter in mosc moscow. they will be happy there's some movement by the syrians. let's see what happens on the ground and whether the opposition also agrees. a u.n. representative is reaching out to the opposition to see what they're saying. >> thank you, richard. we'll be looking for any kind of statement from the opposition. their reaction to this development. whether or not they believe this is moving forward for peace. thank you, again, richard. you're taking a look live at the white house. we're waiting for president obama to walk out with the canadian prim minister and mexican president. they're going talk about the economy, energy, keystone pipeline. we'll bring it to you live when it starts. all right, the republicans have not selected a accounted yet to face off against president obama. not stopping the washington talkers from guessing who will be the running mate. candy crowley tells us who is in and who is out. >> reporter: a wisconsin, maryland, d.c. sweep, romney thinks it will win him the nomination. >> the v.p.? i was thinking about you. i'm not presumptuous enough. i'm not the nominee yet. >> reporter: it's never too early to rush the season according to some people. virginia governor bb mcdonald. a mcdonald signed virginia law requiring women to undergo an ultrasound procedure before an abortion may not help. chris christie. if mitt romney has an authenticity deficit, christie oozes it. republicans love his infour nasness. >> your rear end is going get thrown in jail, idiot. >> reporter: he has a temper. he may have a geographic problem. cue paul ryan. the brainy budget czar of the house. he's the republican face of medicare reform. not a huge plus in an election year. >> i'm focused on doing my job. it's not my forte to get into that speculation. >> reporter: rob portman of ohio, a seasoned, though not consistent lating washington veteran of congress and the bush administration. and louisiana governor bobby jindal. who could offer a surn assist. always mentioned, marco rubio. he could help build an inroad to the hispanic community. >> my answer has not changed. >> still under no circumstances? >> i'm not going to be the vice president. >> reporter: they almost all say that. >> vice president? >> no, no, i promise, no. >> reporter: until they say yes. >> i take this obligation freely. >> one definite no on the v.p. speculations. nikki haley says she's not interested. in an abc interview, she says she loves her current job. let's talk politics. this is something all the candidates have to worry about. getting support from female voters. it's crucial. and it is getting more complicated. want to bring in paul. there's a gender gap matched up against the president. explain it to us. >> we have seen it dating back to elections since 1980. yep, her it is again. brand new numbers out. usa today/gallup. this is in 12 battleground states. look at that overall. 51% for barack obama. 42% for mitt onromney in a hypothetical matchup.much large between women. the same thing in one of our polls. an 11-point advantage for the president over mitt romney. among women, look how much bigger it is. this is a problem for republicans. a couple of things happened this year. the controversy not too long ago against that exception over b t birth control. it seemed to help republicans at first. now it's hurting them. they're trying to paint the republicans as the anti-women party. >> a woman making news, potenti potentially, former president bill clinton making news about hillary. let's listen. >> i believe she's been absolutely honest when she says she doesn't think she'll go back into politics. if she comes home and we do the foundation stuff the rest of our lives, i'm be happy. if he changes her mind and decides to run, i'll be happy. i don't think -- that's light years away. >> i don't think it's light years away, paul. i think he would have very happy if she were to jump in. >> i'm so with you. i think he would be ecstatic. she's said she's only going to finish out this term. if the president is re-elected, she'll not serve a second term. she says that will be her last job in office. people change their minds so often. my guess is we'll be talking about it again. speculation on whether vice president biden would run in 2016. what a primary that would be? >> i mean, come on, she denied it before. i don't believe it right now. we'll see. there is time. >> thank you. stay tuned. >> yeah. take a look at live pictures of the white house. we're waiting for the president to walk out with the prime minister of canada and the president of mexico. they're going to talk about energy, security, the keystone pipeline. great shot. how did the nba become the hottest league on the planet? by building on the cisco intelligent network they're able to serve up live video, and instant replays, creating fans from berlin to beijing. what can we help you build? nice shot kid. the nba around the world built by the only company that could. cisco. that's why i take doctor recommended colace® capsules. i have hemorrhoids and yes, i have constipation. that's why i take colace®. 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[ male announcer ] we're giving away fifty-thousand dollars worth of prizes! enter weekly to win! go to colacecomfort.com to enter! a body at rest tends to stay at rest... while a body in motion tends to stay in motion. staying active can actually ease arthritis symptoms. but if you have arthritis, staying active can be difficult. prescription celebrex can help relieve arthritis pain so your body can stay in motion. because just one 200mg celebrex a day can provide 24 hour relief for many with arthritis pain and inflammation. plus, in clinical studies, celebrex is proven to improve daily physical function so moving is easier. and celebrex is not a narcotic. when it comes to relieving your arthritis pain, you and your doctor need to balance the benefits with the risks. all prescription nsaids, like celebrex, ibuprofen, naproxen, and meloxicam have the same cardiovascular warning. they all may increase the chance of heart attack or stroke, which can lead to death. this chance increases if you have heart disease or risk factors such as high blood pressure or when nsaids are taken for long periods. nsaids, including celebrex, increase the chance of serious skin or allergic reactions or stomach and intestine problems, such as bleeding and ulcers, which can occur without warning and may cause death. patients also taking aspirin and the elderly are at increased risk for stomach bleeding and ulcers. do not take celebrex if you've had an asthma attack, hives, or other allergies to aspirin, nsaids or sulfonamides. get help right away if you have swelling of the face or throat, or trouble breathing. tell your doctor your medical history and find an arthritis treatment for you. visit celebrex.com and ask your doctor about celebrex. for a body in motion. visit celebrex.com and ask your doctor about celebrex. i'm one of six children that my mother raised by herself and so, college was a dream, when i was a kid. i didn't know how i was going to do it, but i knew i was going to get that opportunity one day. and that's what happened with the university of phoenix. nothing can stop me now. i feel like the sky is the limit with what i can do and what i can accomplish. my name is naphtali bryant and i am a phoenix. here's a rundown of some of the stories we're working on. who screamed on the 911 phone call the night trayvon martin died. we'll hear from an au