the russian federation. their relationship has been the subject of speculation for months and long distance until today when they met at the summit in germany. first lady melania trump interrupted to urge them to wrap it up, to no avail. tillerson was the only other administration person. began on an awkward note, the 2016 election. the two leaders' differences may be intractable tillerson said in a briefing where cameras were not allowed. >> the president pressed president putin on more than one occasion about russian involvement and president putin denied involvement as he has in the past. >> but sergey lavrov described things differently, said president trump accepted putin's denials and said some are fueling stories of russian meddling. the intelligence communities concluded with high confidence russian hackers were responsible. putin asked president trump for proof. the two agreed to cooperate in syria. a limited cease fire in the southwest of the country but admitted key key details were still being negotiated. >> i think this is our first indication of the u.s. and russia being able to work together in syria. >> an ongoing sticking point, russia's continuing support for syrian dictator bashar al-assad who carried out a gas attack in april which led president trump to lead an attack on assad's forces. even so -- >> i will tell you by and large our objectives are exactly the same. >> tillerson leader said they hope to negotiate a peace deal. >> pauley: margaret is joined by major garrett. cease fire in syria have been announced before. how is this one different? >> reporter: tillerson says this time russia has the incentive to make it work because the defeat of i.s.i.s. is imminent and the u.s. military role will likely come to an end. these paper agreements only work if the fighters on the ground comply and now we'll have to see if the u.s. and russia can control them. >> major, the north korea nuclear threat has been hanging over the summit, did the president make way there? >> not with russia. there is an open concession progress with china so far has been no better mix. tillerson says neither view the threat with the same urgency as the u.s., want ago campaign of peaceful pressure, one tillerson conceded will require some degree of patience. >> pauley: margaret, president trump also met with the president of mexico. that relationship got off to a rocky start. what came out of today's meeting? >> mexico announced talks to begin renegotiating nafta will start next month, the free trade deal president trump called unfair, but the news is that the meeting happened at all because pithe mexican president asked about the border wall and trump said absolutely this is still the plan. >> this was the president's second foreign trip, major. what did we learn about trump' style diplomacy? >> american security is paramount. hard line on trade. on terrorism, more than tactics and armies. the president argued it is about a will to defend western values, the best of western civil civilization, and has become more comfortable than recent predecessors with fnreign regimes especially those with weapons. >> pauley: thank you. as the leaders met inside, anti-capitalist protesters fought with riot police outside. fires were set, bolts and rocks thrown, nearly 200 officers were hurt. at their meeting, presidents trump and putin pledged to work together to prevent cyberattacks. of course, russian hackers are suspected in a number of recent attacks, including one at a nuclear power plant in the u.s. jeff pegues has more on that. >> the hackers zeroed in on the wolf creek nuclear plant in kansas. u.s. officials say the intrusions were limited to administrative and business networks and insist there is no indication of a threat to public safety or plant operations. investigators have not attributed the incident to a specific country or cyber criminal, but on june 28th the f.b.i. and d.h.s. issued a joint report warning of potential cyber criminal activity at nuclear power plants. jim lewis who advises the u.s. government on cyber security believes there is a leading suspect. >> all the evidence points towards russia. >> really? they probably want to get into the nuclear controls but they weren't able to. they were only able to get into the front end operations, you know, the billing, the office stuff, the email. >> reporter: late last year, the u.s. government identified a russian hacking unit code named grissley steppe as the source of accomplishes cyber activity against u.s. infrastructure, and technology is giving them more targets such as electrical grids, hospitals and election systems. director of national intelligence dan coates. >> the potential impact of these cyber threats is amplified by the ongoing integration of technology into our critical infrastructure and into our daily lives. >> people familiar with the operation say nuclear power plants are actually less vulnerable than other targets because safety systems are not connected to the internet, and lewis says many are outdated. >> it's specialized, it's probably you knee neck. it might be tailored to fit the particular plant. it's not off the shelf like the operating system or the office devices you get from a store. >> a motive for the cyber attacks on nuclear facilities could be to gather intelligence, but, jane, the hackers could also have been planning for future intrusions. >> pauley: all right, jeff pegues, thank you. with congress in recess till monday, we have been following members as may meet with constituents back home. here is dean reynolds, chasing speaker ryan. >> hey, everybody! ( applause ) how where you doing? >> reporter: it was only six years ago that congressman paul ryan's town halls were packed and overflow crowds were the norm. but the speakers events these days were more like yesterday where he had two employee town halls where the questions were easy, general public barred and no follow-up from reporters. >> mr. speaker, can we ask you a question? >> reporter: but today he held a press conference in madison. i'm wondering when you might schedule a fully open town hall for your constituents. >> aside from the obvious security kerns, what we've found is there are people who are trying to come in from out of the district to disrupt town hall meetings. i don't want a showght fest where people are being bused in from out of the district to get on tv. >> reporter: and republican rallies have been rowdy. >> why don't you say it, congressman? >> reporter: with members of congress struggling to talk over protesters. that may be when we found only a handful of republican lawmakers holding to the open town hall meetings this week. here in anna werner, ann jamison would love to talk about health care with ryan, she has been trying to reach his office since january by phone. how successful have you been? >> not successful at all. >> reporter: nothing? no, no. >> reporter: even though she lives outside his district, she says ryan is the speaker of the house, a national figure and not merely a congressman from jamesville. >> the message ends with it saying the voice box is full and you're not able to leave a message. >> reporter: the message she said she would leave, jane, is paul ryan and all members of congress work for the people and are supposed to listen to them. >> pauley: dean reynolds in madison, wisconsin, thank you. the labor department reports the economy added 222,000 jobs last month, but the unemployment rate climbed to 4.4% as more americans started looking for work. the department of education and secretary betsy devos are being sued by 18 states and the district of columbia, that's after the department suspended rules meant to protect students at for-profit colleges who are often stuck with heavy debt. jericka duncan shows what's at stake. >> with a son to support, 30-year-old danielle ramos wanted to improve her earning power so enrolled in american institute in massachusetts. >> a.c.i. was promoting a medical assisting certificate you could receive in nine months. sounded really great. >> reporter: when the institute shut down in 2013, ramos was left with $15,000 worth of student loan debt. the institute later admitted to falsifying grades and attendance records to qualify for millions in federal aid. ramos is among thousands of students with student loan debt from for-profit schools due to predatory practices. under the obama administration, a regulation known as the borrower defense rule was created to protect students. massachusetts attorney general maura healey. >> it provides relief to students who have been victimized by these predatory practices. >> reporter: the rule was supposed to be implemented this month but now delayed under the new administration. a spokeswoman from the education department tells cbs news the borrower defense regulation suffer from substantive and procedural flaws that need to be considered before imposing new burdens on regulated parties. this week healey and 17 other democratic state ags sued education secretary betsy devos. right now 50% of student loans in default in the u.s. come to loans from for-profit schools which only make up 12% of the higher education sector. >> if you take away those regulations, who's there to protect those people, to protect people that don't know? >> reporter: danielle ramos received an email this week, after four years, her $15,000 school loan debt was forgiven. in her case, she had the support of the attorney general's office here. >> jericka, thank you. next on the "cbs evening news," new video backs up venus' account of a deadly car crash. later, an unruly passenger causes chaos in first class. ♪ ♪ ♪ ♪ ♪ but with my back pain i couldn't sleep or get up in time. then i found aleve pm. the only one to combine a safe sleep aid plus the 12 hour pain relieving strength of aleve. and now. i'm back! aleve pm for a better am. 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the accent was neat. >> reporter: the accent? yes, and quickly got into the score. we didn't understand why did it go to 15, 30 and then 40 and then love. >> reporter: it was the beginning of what became a life-long obsession with wimbledon. of course, a lot of people like wimbledon and grass court tennis. but what makes mark outstanding in this field is what is now outstanding in his field. what was formerly a cattle feed lot is now the iowa lawn tennis club, a replica of wimbledon center court. it took mark a year and a half to build it and learned how to maintain it during an internship with the wimbledon ground statute that's all he wanted, just to grow and groom the grass, which is why mark was as surprised as anyone. when he build it -- built it, they came, from around the world, to play on his court of dreams. these kids are from iowa and minnesota to compete in an invitational tournament. and that's umpire barron whittet also from minnesota. >> when i found a place in the middle of iowa in a corn field, i was, like, get in the car, and came as fast as i could. >> reporter: what happens when you build it and they do come? >> they'll come from anywhere and everywhere and at all times of night. >> reporter: does it make you wish you hadn't built it? >> never. >> reporter: mark lets people play for free with a reservation and tennis fans from 42 states and six countries have made the pilgrimage to this tennis heaven amongst the iowa corn fields. >> in the middle! way to be! >> reporter: what would your grandpa think? >> he would be very pleased, i know he would. >> reporter: how could he not be? certainly, if there are ham radios in heaven, you know he's listening. steve hartman on the road in charles city, iowa. >> pauley: and that's the "cbs evening news." this weekend on sunday morning, grammy award winning singer/song writer jack atonov. i'm jane pauley. see you captioning sponsored by cbs captioned by media access group at wgbh access.wgbh.org ♪ tonight, ben affleck's new girlfriend revealed. what we just found out about the mystery blond. have they been close for years? then, inside blake and gwen's romantic road trip. ♪ like a ball and chain >> plus julianne hough, maks and peta's dueling weddings. then, why celine is striking bizarre poses in paris. plus, salma hayek on her massage from hell. >> oh, my god.