President Donald Trump said Sunday that he will no longer work with Democrats to hammer out a deal to provide legal status to hundreds of thousands of “dreamers,” illegal aliens who were brought to the U.S. as children.

“NO MORE DACA DEAL!” Trump wrote, referring to Deferred Action for Childhood Arrivals, the immigration policy that provides legal status to dreamers.

Trump also threatened to exit the North American Free Trade Agreement (NAFTA) if Mexico does not start doing more to “stop the big drug and people flows” into the U.S.

Trump offered the pronouncements in a series of immigration-themed tweets Sunday morning and blamed Democrats for stymying Border Patrol agents from apprehending illegal aliens crossing the southern border.

“Getting more dangerous,” he wrote, adding that Republicans should invoke the so-called “nuclear option,” allowing the Senate to hold a simple majority vote enforcing immigration laws.

Trump also criticized the Mexican government for “doing very little, if not Nothing,” to stop illegal immigrants from passing through Mexico’s southern border through to 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!” Trump said.

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

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