Argument. Shannon green reports on the case before the court. Reporter thousands of passionate protesters were between the supreme court. The eight justices heard an extended argument of whether the president went too far in 2014 when the programs blocked the deportation of roughly 4 Million People in the u. S. Illegally. Texas is leaving the 26state coalition challenging the move, which it calls unconstitutional run around congress. We allow a president , whether its this president or future president to make changes in the law without congressional approv approval, then we will end up with a perverted constitution. Reporter it goes to the man they believe could make a difference, justice kennedy. He shows skepticism. He says we are defining the limits of discretion. That is a legislative, not executive act. He went on to add, the briefs go on for pages that the president admitted a certain numb before of people and Congress Approved it. To me, its backwards. Its as if the president is setting policy and congress is executing it. Congress has given the president the discretion to set who stays and who goes. Noting the discrepancy of those here illegally, they said priorities have to be set. Bob menendez said he believes the president has the law and moral authority on his side. We believe at the end of the day, even though there are only eight justices, there will be enough justices to uphold it and keep families together. Reporter with just eight justices, we are facing the possibility of a tie. If that happens, the Lower Court Ruling stays in place. In this case, they put the president s programs on hold. They have to hope they have convinced at least five justices today. Bret . More troops are headed to iraq to help in the fight against isis. Ash carter made that announcement today. National security correspondent, Jennifer Griffin reports on the latest. Reporter when pentagon officials asked the iraqis to deploy attack helicopters to help fly cover, iraqs Prime Minister denied the request. Defense secretary announced not only will the u. S. Send apache gun ships, but deploy the troops to retake mosul. We will replace additional advisers with the forces down to brigade and battalion headquarte headquarters. A powerful mobile rocket system to cover troops. Its the First Time Forces will be deployed at the battalion level meaning near the front line. Most of these forces will be, obviously, assisting the iraqis. Apache helicopters will be in comb combat. The team has consistently been to look for opportunities to reinforce the elements of our campaign that are showing some progress. It brings the number of american troops authorized by the white house to 487. This is the first significant boost since last june when hundreds were sent to help the iraqis reclaim ramadi, pushing isis out in december. We want to do more. We are going to do more. We want to excel rate this and get this over with as fast as we can. We are limited by our own ingenuity and ideas. Reporter president obama will fly to saudi arabia to meet gulf allies. He called them free riders in an interview. They will ask gulf allies to fund the areas where isis has been removed. We have seen this movie before. We have to make sure theres a hold for us afterward. Reporter the u. S. Also convinced the Iraqi Government to allow it to send 415 million dlar in badly needed military aid. The money will go through baghdad. Bret . Thank you. For the third time in a week, a russian jet taunted the u. S. Over the baltic sea. The pentagon Spokesman Says the jet came within 50 feet of the u. S. Surveillance plane on a routine mission in that area. It comes two days after a pair of russian jets buzzed a Navy Destroyer 33 times over two days. South korea is raising concerns tonight that north korea is preparing for a fifth nuclear bomb test. To bolster moral as they deal with tough international sanctions. The south korean president did not say what signs pointed to another test but ordered the military to be ready. A Missile Launch in north korea ended in failure. President obama heads to saudi arabia tuesday amid controversy to declassify 28 pages of a congressional report that some believe show saudi arabia funded at least two of the 9 11 hijackers. Members of Congress Want to give 9 11 families the right to sue saudi arabia. Its something the kingdom warns it will retaliate against. They report on the latest strain between the two countries. Congress is threatening saudi arabia. The saudis are threatening the u. S. Economy and the Obama Administration is in the middle. Senior republicans and democrats are pushing a bill to allow americans to sue foreign governments and others for their roles in terrorist attacks in the United States. As our nation confronts new and expanding Terror Networks targeting our citizens, stopping the Funding Source for terrorists grows more important. That has prompted the saudi government to sell 750 billion in u. S. Debt and assets if Congress Passes that bill. The administration is down playing that threat, claiming it would harm the saudi economy. The white house opposes bipartisan efforts to allow americans to sue foreign governments saying they exposed the u. S. To foreign lawsuits and would damage the saudi u. S. Relationship, one that is aligned on fighting terrorism. This principal is not about our relationship with one country, its about the ability to work with countries around the world. They site 28 pages of the 2002 congressional inquiry into the attacks. Bob graham was the cochair of that panel. He and others claim the u. S. Down played saudi involvements to protect the turbulent relationship. There are opportunities for the family to have been complicit in september 11th. They say it would harm national security. Others claim the charges against the saudis are unsub stan chated. Tomorrow, president obama travels to saudi arabia. They are free rider that is expect the u. S. Military to intervene heavily in regional disputes like the civil war in syria. It drew criticism from the saudis. More than two dozen family members kills in the 9 11 attacks sent a letter to the white house urging president obama to support the bill giving the ability to sue foreign interest. They contended it would resolve the question of whether saudi arabia or others should assume responsibility for the 2001 attacks. Rich, thank you. One day before the new york primary, a couple campaign stumbles. Hillary clinton tries to clear up confusion over whose side shes on on a bill to allow 9 11 families to sue saudi arabia. Bernie sanders tax returns raised eyebrows over what hes paid to the government. Ed henry is on the road to the campaigns. Victory tomorrow. Reporter Hillary Clinton was in full damage control mode today on whether she supports a bill by new york senator, shuck schumer to give them a chance to sue saudi arabia. That came after clinton stumbled. Shes running on experience suggested she has not done her homework on the issue. I knlt, i havent studied it. I try to learn what is at the core of a question before i offer an opinion. Reporter Bernie Sanders may not be able to capitalize. He also came out in favor of the legislation after initially fumbling. You are asking me to give you a decision about a situation and piece of legislation that i am not familiar with. Reporter the back and forth came as they said they are confident of a victory tuesday but nervous they have closed us into a tight, single digit margin. Especially after the largest rally sunday. 28,000 people in Prospect Park in brooklyn. We want a government which represents all of us, not just the 1 . Reporter clinton played into that narrative this weekend as prosanders protesters showered her motorcade with dollar bills, symbolizing it. George clooney admitted it was an obscene amount of money. They are right. It is ridiculous we should have this money in politics. Sanders has his own in narratives after releasing the 2014 tax returns. Sanders makes far mess money than clinton, he had taxable income of over 205,000 putting him in the top 5 . The democratic socialist only paid an effective tax rate of 13. 5 even though he wants to raise taxes to pay for his programs. Late today, sanders blamed clinton of breaking the law taking money and funneling it into her campaign. The clinton camp says thats not true and sanders is getting desperate. Ed henry live in new york, thank you. Donald trump is looking for victory in new york and a sweep of the 95 delegates there as he continues to battle it out, the rnc over its rules. This, as ted cruz picked up delegates over the weekend. Karl cameron reports from buffalo on the fight over the gop nomination. Reporter donald trump is pushing for a landslide. His goal is 80. It requires a majority statewide and most of the congressional districts. The polls were beyond anything that anybody has seen, really. Reporter an average of polls shows the developer ahead of the ohio governor, john kasich and ted cruz. Trump raised the possibility of violence at the convention if hes not the nominee. I hope it doesnt involve violence. I dont think it will, but i will say this, its a crooked system. Kasich suggested thats what losers do. This is the process states laid outd. If it works for me, i will say its a great process. If it doesnt, i will complain with donald. Reporter he should have say in the rules saying there needs to be more showbiz in the production. Stop considering rule changes to avoid the appearance of unfairness of a conditioned. The system has to change. Reporter trump says hes been cheat ied. He needs delegates. Possible, but not easy with kasich and cruz. Five states voted. 1. 3 Million People voted and he lost all five. We have won five in a row. Donald is upset, so hes throwing a fit. Winning all 14 delegates in wyoming and 32 of 42 in georgia, a state trump won. Cruz is all but promising a fight at the convention. Its going to be a battle in cleveland to see who can get to a majority. I believe donalds highest total will be the first ballot and go steadily down. Donald cannot win and we dont want to nominate someone who is a loser in november. Reporter trumps critics argue he lacks serious policy. If he doesnt win enough delegates to clinch the nomination, the question is whether or not he can gain them in the contested convention. Live in buffalo, thanks. Up next, find out where living isnt easy when it comes to taxes. First, from around the country. Fox 25 in boston, runners from around the world came to run the 120th marathon today. Two people who lost limbs in the 2013 marathon bombings were among the 30,000 competitors who ran. Fox 13 in seattle, the search is on for a missing couple and the two brothers suspected of murdering them. County deputies believe they were killed and have evidence linking them to the couples disappearance. The two families were involved in a property dispute. This is a live look at houston from the fox 26 helicopter out there. The big story there tonight, severe weather. Storms dumped more than a foot of rain in the houston area overnight. Schools canceled, city offices closed. One meteorologist says 70 subdivisions are flooded. It isnt over. Flash flood from houston to dallas and san antonio. A live look from outside the beltway from special report. Well be right back. If you have moderate to Severe Plaque Psoriasis isnt it time to let the real you shine through . Introducing otezla, apremilast. Otezla is not an injection, or a cream. Its a pill that treats plaque psoriasis differently. Some people who took otezla saw 75 clearer skin after 4 months. And otezlas prescribing information has no requirement for routine lab monitoring. Dont take otezla if you are allergic to any of its ingredients. Otezla may increase the risk of depression. Tell your doctor if you have a history of depression or suicidal thoughts, or if these feelings develop. Some people taking otezla reported weight loss. Your doctor should monitor your weight and may stop treatment. Side effects may include diarrhea, nausea, upper respiratory tract infection, and headache. Tell your doctor about all the medicines you take, and if youre pregnant or planning to be. Ask your dermatologist about otezla today. Otezla. Show more of you. Real is touching a ray. Amazing is moving like one. Real is making new friends. Amazing is getting this close. Real is an animal rescue. Amazing is over twentyseven thousand of them. There is only one place where real and amazing live. Seaworld. Real. Amazing police are now certain an explosion on a bus in the middle of jerusalem today was a terrorist attack. Flames and smoke billowed from the bus and the immediate aftermath of the explosion, 21 people wounded in the attack. As of now, police dont know who targeted the bus. It came as the israelis prepare for the passover holiday. Back here in the u. S. , it is tax day. The u. S. Is expected to collect 5 trillion in taxes costing the average american 5700 a piece. There are some states where taxes arent such a burden. Its time to pay the piper. Uncle sam wants, on average, almost 6,000 or 10 of the median american income. Some pay more. The top 1 paid 38 of all federal taxes. 45 pay zero, until property sales and state income taxes are factored in. Its a myth to say 50 of the American Public doesnt pay tax. We are talking income tax. When you look at the tax burdening all americans are paying taxes. Reporter they pay more on taxes than food, housing and clothing combined, working four months of the year just to pay taxes. Some states are worse than others. New york is the highest where 13 of peoples income goes to state taxes, followed by hawaii, maine, vermont and connecticut where the average resident pays 10,000 a year in state taxes alone, compared to alaska where they pay 4,000 or 5 of income. State and local level, i think you feel good about it if you are getting value for your dollars. Reporter value for what taxes pay for, cops, roads, education and bridges. Wallethub. Com rated the states with the best bang for the buck. One, new hampshire. The worst up collude north dakota and alaska, which scored poorly on hospitals, education and crime followed by hawaii and new york, downgraded on infrastructure. Tax fairness is going to be a subjective thing. Its in the eye of the beholder. 13 would rather spend a night in jail than do their taxes. 86 say we need the irs. Bret . Thank you. The department of Veterans Affairs has been systematically shredding documents. Military. Com reports of the 155 claims, related documents awaiting destruction, 69 were incorrectly placed in shred bins. Surprise inspection of ten offices found six mishandled documents. They reported it was systemic and the impact on veterans could be serious. The v. A. Agreed to revise it and realign staff responsibilities and denied system wide issues. On the market, the dow rose 107, closed above 18,000, the highest point since july. S p 500 is up nearly 14. The nasdaq was up about 22. Next, the pressure to regulate drones after a jet carrying 137 people was suspected of hitting one. Feels like each day is a game of chance. I wanted to put the odds in my favor. So my doctor told me about botox®, an fdaapproved treatment that significantly reduces headache days for adults with chronic migraine, 15 or more headache days a month, each lasting 4 hours or more. 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Greg is in london with details. Reporter a feared aviation danger has become a reality. For the first time ever, a drone or Unmanned Aerial Vehicle struck a commercial passenger plane. The British Airways plane was landed when it was hit by what the pilot believes was a drone. No damage was done, but the ramifications are huge. It is the first, unfortunately, of many we are going to see. Certainly around the world. Reporter with increased use of uavs, theres a rapid number of mere misses involving drones and aircraft. If the drone hits it planes engine, the hardware can break it up. The lithium battery can explode with catastrophic. It will cause the Wind Turbines to set fire and the pilots will certainly not have full control over their plane. Reporter precautions are being taken. It cannot be flown within an aircraft and they must be registered so they can be traced. The biggest fear are terrorists who dont care about laws. There are reports jihadis are seeking drones to become a new weapon in their arsena