Im wolf blitzer, youre in the situation room. Lets get to the breaking news. Donald trump firing back at former apprentice contestants who accused him of sexism, racism and violence. Trump accuses them of total dishonesty and disloyalty. As trumps lead grows in his home state, he rips ted cruz for slamming new york values and steps up his war with the gop establishment. Writing in the wall street journal trump calls the partys delegate system rigged, even as the New York Post bets that trump can become, quote, more president ial. Hillary clinton and Bernie Sanders, they get out of town after last nights cnn democratic president ial debate in brooklyn turned into a slugfest and a shouting match. The early debates were relatively gentle, this time they went for the vug lar, battling over wall street, and the middle east. Sanders flew to the vatican where today he talked about a moral economy. Clinton stopped at a Harlem Senior Center before flying to california for a highpriced fundraiser. And kim jongun celebrates a dynasty of dictators on his grandfathers birth day, but the launch of a new missile ends in failure. Well go live inside north korea for a cnn exclusive. Ill speak with Tulsi Gabbard. Our correspondents, analysts and guests will have full coverage of the days top stories. Lets begin with the race for the president ial nomination. Our National Correspondent jason carrol is following the contest from plattsburgh, new york. Jason, whats the latest . Reporter trump wrapped up his rally here in plattsburgh taking more than a few digs at the gop and the system which he said robbed him of votes and delegates in colorado. He had the people of colorado are angry and have every right to be. Tonight donald trump is not letting up on his claim that the republican nomination process is rigged. The republican system is rigged, okay. Its a rigged system. Reporter the gop frontrunner also voicing his complaints in a wall street journal oped writing the system is being rigged by Party Operatives with double agent delegates who reject the decision of voters. The chairman of the Republican National committee, Reince Priebus, today telling wolf blitzer that trumps criticism is off base. No, i think the system is working. All the delegates that are bound to the candidates will stay bound to the candidates. Reporter the volleying over the rules comes as republican primary voters in new york get set to weigh in on tuesday. Trump picking up the endorsement of the New York PostEditorial Board which wrote should he win the nomination, we expect trump to pivot, not just on the issues but in his manner. The postpivot trump needs to be more president ial, better informed on policy, more self disciplined and less thinskinned. Trump is still keeping up the attacks on rooival ted cruz abo his remarks on new york values. What do we see in new york values. We see really, really incredible when you look at september 11th especially, new york police and new york firefighters, incredible. Reporter cruz appearing with tonight show host and trump impersonator jimmy fallon, using a bit of humor to deflect trumps criticism of his values comments. So when i said new york values i was merely trying to say that i value new york. Except i was saying it backwards, the way yoda would say it. Reporter trump today also facing backlash from a group of former apprentice contestants who blasted the way their former boss is running his president ial campaign. Donald trump is validating peoples hate and his bigotry in a way that i truly believe has the potential to tear this country apart. Reporter all this as trump looks to move beyond a recent controversy involving his Campaign Manager, corey lewandowski, who will not face charges after he had been accused by a reporter of grabbing her arm. Lewandowski telling cnns chris cuomo, he tried to contact the reporter to clear the air. That night i called Michelle Fields because i didnt know what happened honestly. The interaction with Michelle Fields lasted a sum total of three seconds of my entire life. I never met her before and the only time i interacted with her is on that videotape. Its not that we didnt try to reach out to the to the bottom of it, she wanted to make it a story. Reporter when it comes to those former apprentice contestants, trump wanting to have the last word, releasing a statement calling them ungrateful. He said they should be careful or ill be hours of footage of them individually praising me. Ask how successful they have been since they left. Six failing wannabes out of hundreds of contestants, so sad. That type of language may not be president ial, wolf, but its the exact kind of language Trump Supporters seem to respond to. A day after their big ballots in brooklyn, the Democratic Candidates have moved on, Bernie Sanders to the vatican, Hillary Clinton getting ready for a california fundraiser. But their stunning slugfest exposed some raw nerves and some very hard feelings. Lets go to our senior washington correspondent, joe johns, whos got more on that. Joe. Wolf, Bernie Sanders taking a quick trip to the vatican for a speech at a critical time just before the New York Primary. The campaign denies it was about politics and sanders did not get an audience with the pope, but its very clear he may need something to change the dynamic of the race, aligning himself with the teaching of the church couldnt hurt. Tonight Bernie Sanders is taking a break from the new York Campaign trail for a conference on social and Economic Justice at the vatican, praising the Catholic Churchs teachings on the market economy. The top 1 of people on this planet now own more wealth than the bottom 99 . That to me is unacceptable. While Hillary Clinton made a stop at a Senior Center in harlem. And i now know where to come when i want a good game of dominos. Before heading to california for a weekend fundraising blitz with george clooney, the democratic race heating up ahead of tuesdays New York Primary. That is not accurate. I have stood on the debate stage with senator sanders eight prior times. The divisions on full display during cn nervous systemns deb if youre both screaming at each other, the viewers wont be able to hear either of you. The democratic contenders sparring over judgment and preparedness. Even his core issue, breaking up the banks, when asked, he could not explain how that would be done. Do we really feel confident about a candidate saying that shes going to bring change in america when she is so dependent on big money interests. The rivals also clashing over raising the minimum wage. And i will work as hard as i can to raise the minimum wage. I always have. I am sure a lot of people are very surprised to learn that you supported raising the minimum wage to 15 an hour. Clinton expressing regret for the 1994 crime bill signed by her husband. Im sorry for the consequences that were unintended and that have had a very unfortunate impact on peoples lives. After the debate, asked by cnn whether he regretted his vote for the crime bill, sanders responded. In retrospect, it was a vote that led to a lot of awful things. If i had voted the other way, id have secretary clinton saying Bernie Sanders, you had an opportunity to vote against the ban assault weapons, you didnt do that. Clinton again refused to release transcripts of her speeches to goldman sachs. Lets set the same standard for everybody. When everybody does it, okay, i will do it. And she tried to turn the tables on sanders, calling on her rival to release his tax returns. Ive released 30 years of tax returns and i think every candidate, including senator sanders and donald trump, should do the same. What we have always done in my family is jane does them. And shes been out on the campaign trail. We will get them out. So were still waiting for word on when Bernie Sanders will release his taxes. Why he hasnt done so is an open question. While he calls himself one of the poorer members of the senate, tax returns can still tell you what kind of deductions a politician takes and what kinds of charitable contributions he or she makes, if any. Wolf. Thank you very much. Joe johns reporting. Lets bring in jeff zeleny. Jeff, Bernie Sanders, when is he going to get back on the campaign trail . Hes still at the vatican right now. Reporter he is, wolf, but hell be back here in new york city at least scheduled to be back here tomorrow, on saturday, around 12 15 or so. He will be back on the campaign trail with a big scheduled rally in brooklyn again on sunday. So definitely is taking a bit of a detour here, no question about it. Some sanders advisers Still Holding out a bit of hope that he could cross paths with the pope. At this hour senator sanders is staying the night or believed to be staying the night, his aides confirm, in essentially the hotel inside the vatican. Casa asanta maria. Thats near where the pope stays. Possible they could cross paths. No meeting scheduled at all. But he will be back here campaigning. Sanders aides say, yes, he took a detour but he will be gone out of new york a shorter amount of time than Hillary Clinton will be because shes out on that west coast fund razraiser tomo night with george clooney. And still no tax returns from Bernie Sanders . Reporter so far no sign of that. He told you that he would. In fact they have been saying this for a few weeks now, woclf. Were just talking about the 2014 return. Still at this hour theres no sign of it from the campaign. Jeff zeleny reporting. Joining us now, Tulsi Gabbard of hawaii, an iraq war veteran, member of the Armed Services and Foreign Affairs committee and a strong supporter of Bernie Sanders. Congresswoman, thanks for coming in. Thanks, wolf. He did say the tax returns would be released today, so i assume they will be released today. I assume they will be. Im not in on those conversations, but if he says hell do it, i imagine he will. From your perspective as a strong supporter of Bernie Sanders, why not get all those tax returns out . He said hes going to release 2014 and maybe later hell release some others. Whats the problem . It seems like he intends to release more than just 2014. Like i said, he says hes going to do it, i expect that he will. You agree the public has a right to look at these tax returns . Sure. If someone is running for president , you expect there to be transparency about who they are and where they have been. Were you surprised he decided to make this trip to rome to the vatican only a few days before the New York Primary . Some suggest hes so far behind in the polls hes basically giving up on new york. Bernie is not your typical politician. If theres anything everyone can agree on, i think thats probably a good point. I think his going there and accepting this invitation reflects his commitment to talking on a Global Platform about the need for a moral economy and fairness and hell be back in new york tomorrow and working hard all the way up through the election there coming up on tuesday. Take a look at this nbc wall street journal poll. Hillary clinton 57 , Bernie Sanders 40 . Its a wall street journal poll. Obviously that worries you. Do you think he can come back from a significant poll deficit like that . I think in states all across the country, bernie has shown a great deficit in a lot of polls. In many of them he has been able to come back and he has won eight of the last nine contests, i believe, so hes working hard. Hes got a lot of supporters working hard. To be able to get his message out to the voters of new york in advance. Its tough, theres no doubt about it, but well see what happens. The New York Primary is this tuesday and then a week later youve got pennsylvania, maryland, connecticut, similar kinds of states. The polls show that Hillary Clinton is ahead in those states as well. She could be on a swing right now. Theres a lot of could bes that we could talk about, but i know that really the important thing is to really focus on what are the Critical Issues that the American People are caring about, making sure that they are informed clearly on the contrasts and differences between Bernie Sanders and Hillary Clinton before they go in and cast that vote on who they think should be our next president. Hes made a lot of noise lately, as has donald trump on the other side, over the delegate Selection Process. He says democratic primary process, including the super delegates, he says it distorts reality, that there are so many southern states, for example, he lost almost all of those southern states, i think he lost them all to Hillary Clinton. He said that distorts the process. Do you have a problem with the way the Democratic Party selects a president ial nominee . I think that this whole primary process has been pretty enlightening. I can tell you some of my friends at home, they call me because they are completely confused by this process. Saying if someone wins by such a big margin, how come they dont get that same reflection in the super delegate or the delegate count. So i think the goal and the objective going forward, and i think this is something Bernie Sanders has talked about, is how do we open the process and make it so its transparent and fair, make it so people have easy access to voting so we have that increased Voter Engagement so our democracy can become more vibrant and a reflection of the people who are coming out and casting their votes. Congresswoman, we have more to discuss. I want you to stand by. Well take a quick break. Theres other information coming into the situation room right now. Well be right back. If you misplace your discover card, you can use freeze it to prevent new purchases on your account in seconds. And once you find it, you can switch it right on again. Youre back freeze it from discover. Get it at discover. Com. Some people know how to make an entrance. To thrive under pressure. To reject the status quo. And they have no problem passing the competition. The aggressive new 2016 lexus gs 350 and 200 turbo. Once driven, theres no going back. Youre down with crestor. Alright now theres a way you can get crestor for 3. Adding crestor, along with diet, lowers bad cholesterol. Crestor is not for people with liver disease, or women who are nursing,pregnant, or may become pregnant. Tell your doctor all medicines you take. Call your doctor if you have muscle pain or weakness; feel unusually tired; have loss of appetite, upper belly pain, dark urine or yellowing of skin or eyes. These could be signs of serious side effects. Ask for the crestor 3 card. Ask your doctor about crestor. The Bud Light Party believes in change. Thats why bud light has a new look. And we want to share it with everyone. From our national parks. To our furthest shores. Jackpot to your living room. Look under your seats [squeals of delight] still the same refreshing bud light. With a new look. Thats why i run on quickbooks. Details. I use the payments app to accept credit cards. And everything autosyncs. Those sales prove my sustainable designs are better for the environment and my bottom line. Thats how i own it. Were back with democratic congresswoman Tulsi Gabbard of hawaii, shes a Bernie Sanders supporter, an iraq war veteran and member of the foreign far affairs and services committee. Do you agree that its time for the u. S. To reduce its involvement with nato unless the european allies, the other countries, starting spending on nato and let the u. S. Off the hook, if you will, on a financial commitment . I agree with senator sanders and i think Hillary Clinton took the same position last night in the debate that other countries within nato need to step up. They need to pay their fair share rather than always relying completely on the United States to carry the lions share of the costs and the burden. But you still believe in nato . I think nato does have a place, but weve got to look at every countrys role in nato, what the mission is, what the purpose is in todays world. I think thats a relevant conversation to have. And so what would you like to see emerge from that kind of conversation . What kind of u. S. Role, what kind of nato involvement . There are 28 countries that are allies in nato. I think thats a conversation that needs to happen between the United States and the countries within nato looking at the situation in the world that exists today. I think we can look back at the past and see how things have changed, but thats something thats going to have to be worked out really between these countries. But there has to be a more equitable share of these countries who are now facing serious threats from groups like isis and a