Palm Beach — President Donald Trump has declared "NO MORE" to a deal to help "Dreamer" immigrants and threatened to pull out of a free trade agreement with Mexico unless it does more to stop people from crossing into the US. He claimed they're coming to take advantage of protections granted certain immigrants."NO MORE DACA DEAL!" Trump tweeted on Sunday, one hour after he began the day by wishing his followers a "HAPPY EASTER!"He said Mexico must "stop the big drug and people flows, or I will stop their cash cow, NAFTA. NEED WALL!".The US, Canada and Mexico are participating in tense negotiations over the North American Free Trade Agreement at Trump's insistence. Trump says NAFTA is bad for the US."Mexico has got to help us at the border," Trump, holding his wife's hand, told reporters before the couple attended Easter services at an Episcopal church near his Palm Beach home. "If they're not going to help us at the border, it's a very sad thing between our two countries.""A lot of people are coming in because they want to take advantage of DACA," he added.Former President Barack Obama created the Deferred Action for Childhood Arrivals programme to provide temporary protection and work permits to hundreds of thousands of immigrants who are living in the US illegally after being brought here as children.Mexico is doing very little, if not NOTHING, at stopping people from flowing into Mexico through their Southern Border, and then into the U.S. They laugh at our dumb immigration laws. They must stop the big drug and people flows, or I will stop their cash cow, NAFTA. NEED WALL!— Donald J. Trump (@realDonaldTrump) April 1, 2018 Trump ended the programme last year but gave Congress six months to pass legislation enshrining it. A deal has so far proved elusive and Trump has blamed Democrats.It was not immediately clear what Trump was referring to when he said people are coming to take advantage of the programme.The Department of Homeland Security is not issuing new permits, though existing ones can be renewed. The Obama administration allowed signups during a set period and the programme is closed to new entrants.Proposed DACA deals crafted by lawmakers and rejected by Trump also were not open to new participants.Trump did not explain what he meant when questioned by reporters as he entered the Church of Bethesda-by-the-Sea with the first lady and his daughter Tiffany. The White House did not immediately respond to a request for clarification.Trump, when addressing reporters briefly before entering the church, again blamed Democrats for failing to protect the "Dreamers"."They had a great chance. The Democrats blew it. They had a great, great chance, but we'll have to take a look because Mexico has got to help us at the border. They flow right through Mexico. They send them into the United States. It can't happen that way anymore."Trump promised during the 2016 presidential campaign to build a Southern border wall to stop illegal immigration and drugs from Mexico, but Congress has frustrated him by not moving as quickly as he wants to provide money for construction.The president also complained on Twitter that border patrol agents can't do their jobs properly because of "ridiculous liberal (Democrat) laws" that allow people caught for being in the country illegally to be released while they await a hearing before a federal immigration judge.Border Patrol Agents are not allowed to properly do their job at the Border because of ridiculous liberal (Democrat) laws like Catch & Release. Getting more dangerous. “Caravans” coming. Republicans must go to Nuclear Option to pass tough laws NOW. NO MORE DACA DEAL!— Donald J. Trump (@realDonaldTrump) April 1, 2018 Trump tweeted that the situation is "Getting more dangerous" and "Caravans" are coming. He did not offer details to back his comment.The president's tweets came after Fox News' "Fox & Friends" reported early on Sunday on what it said is a group of 1 200 immigrants, mostly from Honduras, headed to the US.The segment was a follow-up to a report by Buzzfeed News on hundreds of Central Americans making their way through Mexico in hopes that American authorities will grant them asylum or be absent when they attempt to cross the border.The Fox headline was "Caravan of illegal immigrants headed to US". The president is known to watch the cable TV programme in the morning.Brandon Judd, leader of the union representing border patrol agents, predicted on "Fox & Friends" that those in the caravan would create havoc and chaos in the US as they wait for what he described as immigration reform. Judd also said Congress needs to pass tougher laws, an idea Trump appeared to echo, and create more bed space for immigration authorities to house people.Ohio Governor John Kasich, a Republican, chided Trump over the tone of the tweets."A true leader preserves & offers hope, doesn't take hope from innocent children who call America home. Remember, today is Easter Sunday," tweeted Kasich, a Trump critic who challenged him for the 2016 Republican presidential nomination.A true leader preserves & offers hope, doesn't take hope from innocent children who call America home. Remember, today is Easter Sunday. #DACA #Hope https://t.co/T7HUbhL9qd— John Kasich (@JohnKasich) April 1, 2018 Arizona Republican Senator Jeff Flake, another Trump foe, urged Congress to take up the fight for Dreamers."There are plenty of lawmakers on both sides of the aisle who stand ready to work with the administration on legislation to protect DACA kids who call America home," he tweeted. "Let's do it."There are plenty of lawmakers on both sides of the aisle who stand ready to work with the administration on legislation to protect DACA kids who call America home. Let's do it.— Jeff Flake (@JeffFlake) April 1, 2018 Sunday's church visit was Trump's first public appearance with his wife since CBS' "60 Minutes" aired an interview the previous Sunday with Stormy Daniels, the adult-film star who says she had sex with Trump in 2006, early in his marriage and a few months after Mrs Trump gave birth to their son.The White House says Trump denies the affair. Mrs Trump spent most of the past week in Palm Beach with her son.The Trumps returned to Washington later on Sunday.