Washington (CNN) President Donald Trump again called for an end to the filibuster and said there will be no deal with Democrats on the Deferred Action for Childhood Arrivals, also known as DACA.

"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," Trump tweeted Sunday morning.

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

In two more tweets Sunday morning, Trump threatened to dismantle the North American Free Trade Agreement (NAFTA), which he called Mexico's "cash cow," if the country doesn't reduce the flow of immigrants coming across the southern US border. Trump also tweeted that "big flows of people are all trying to take advantage of DACA. They want in on the act!"

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

The President followed up on his tweets as he went into Easter Sunday church service in West Palm Beach, Florida.

"Mexico has got to help us at the border. If they're not going to help us at the border, it's a very sad thing between two countries. Mexico has got to help us at the border. And a lot of people are coming in because they want to take advantage of DACA and we're going to have to really see," he said. "They had a great chance. The Democrats blew it. They had a great, great chance. But we'll have to take a look. But Mexico has got to help us at the border. They flow right through Mexico. They send them into the United States. Can't happen that way anymore."

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