President Donald Trump on Sunday 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 U.S. He claimed they’re coming to take advantage of protections granted certain immigrants.

“NO MORE DACA DEAL!” Trump tweeted 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 U.S., 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 U.S.

“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, Florida, 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.

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

Former President Barack Obama created the Deferred Action for Childhood Arrivals program to provide temporary protection and work permits to hundreds of thousands of immigrants who are living in the U.S. illegally after being brought here as children. Trump ended the program 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 program.

The Department of Homeland Security is not issuing new permits, though existing ones can be renewed. The Obama administration allowed sign-ups during a set period of time, and the program is closed to new entrants.

Proposed DACA deals crafted by lawmakers and rejected by Trump also were not open to new participants.

These big flows of people are all trying to take advantage of DACA. They want in on the act!

— Donald J. Trump (@realDonaldTrump) April 1, 2018

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.

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 Sunday on what it said is a group of 1,200 immigrants, mostly from Honduras, headed to the U.S. 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 U.S.” The president is known to watch the cable TV program 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 U.S. 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.

Some fellow Republicans 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 Ohio Gov. John Kasich, a Trump critic who challenged him for the 2016 Republican presidential nomination.

The Trumps were returning to Washington later Sunday.

(AP)