President Trump on Sunday lashed out at Democrats for not supporting funding for his signature campaign pledge of building a wall on the Mexican border that will stop “drugs and very bad MS-13 gang members.”

“The Democrats don’t want money from budget going to border wall despite the fact that it will stop drugs and very bad MS-13 gang members,” Trump said on Twitter on Sunday.

The president also reassured his millions of Twitter followers of his campaign’s rallying cry that he will build a wall and Mexico will pay for it.

“Eventually, but at a later date so we can get started early, Mexico will be paying, in some form, for the badly needed border wall ,” he said minutes later on Twitter.

Trump is requesting $1.4 billion in funds to begin construction of the wall in a stopgap spending bill needed to keep the government operating past Friday and as his first 100 days in office comes to an end on Saturday.

But the controversial proposal is complicating already tense negotiations on the funding bill that Congress is considering along with other contentious issues like repealing and replacing ObamaCare and tax reform.

Attorney General Jeff Sessions said on Sunday that one way or another Mexico will have to pony up the billions of dollars to pay for the wall.

“I know there’s $4 billion a year in excess payments, according to the Department of the Treasury’s own inspector general several years ago that are going to payments to people – tax credits that they shouldn’t get,” Sessions said on ABC’s “This Week.” “Now, these are mostly Mexicans. And those kind of things add up – $4 billion a year for 10 years is $40 billion. There are a lot of ways we can find money to help pay for this.”

I n an interview on CNN’s “The State of the Union,” Homeland Security director John Kelly said Trump “will be insistent” that his border wall be funded even as a government shutdown looms.

“I think it goes without saying that the president has been pretty straightforward about his desire and the need for a border wall. So I would suspect, he’ll do the right thing for sure, but I would suspect he will be insistent on the funding,” Kelly said.

But Sen. Dick Dubin called Trump’s insistence “a political stunt, an obsession” that could lead to a government shutdown.

“To think that he would consider shutting down the government of the United States of America over this outlandish proposal of a border wall ,” said Durbin, (D-Ill.) on CNN on Sunday. “That would be the height of responsibility. He does not want that to define his first 100 days . ”

The Trump administration said the wall is vital for national security and has in recent remarks and presidential tweets argued that the lack of action by past presidents have allowed the murderous MS-13 gang to expand in the US.

” The weak illegal immigration policies of the Obama Admin. allowed bad MS 13 gangs to form in cities across U.S. We are removing them fast! ,” Trump wrote on Twitter on April 18.

Trump’s comments came just days after the bodies of four badly beaten young men were found in a Suffolk County park that police believe was the work of MS-13 gang members.

Rep. Pete King, whose Long Island district includes the Recreation Village Town Park in Central Islip where the murder victims were found implored the Democrats to back funding for the wall.

“Democrats should put aside political correctness, realize there is nothing racist or bigoted about having a border wall. We need it not may be in every mile along the way, you have to have an extensive border wall,” the Republican said on Fox News’ “Sunday Morning Futures.”

“If you saw the dead bodies out in my district as a result of people coming across the border freely, you see the consequences of this,” King said. “It is absolutely essential. President Trump is right.”

Continuing his Twitterstorm on Sunday, Trump weighed in on a number of issues, including ObamaCare and the French election.

“ObamaCare is in serious trouble. The Dems need big money to keep it going – otherwise it dies far sooner than anyone would have thought,” he wrote.

Trump said on Friday that action could be taken on former President Obama’s Affordable Care Act when Congress returns to session this week but that tax reform will definitely be on the table.

He also remarked on Sunday’s French presidential election, which pits a Trump-like populist candidate in Marine Le Pen among a crowded field of 11 hopefuls.

“Very interesting election currently taking place in France,” he said in an unusual understated tweet.

Another Twitter message appeared to refer to a segment of “Fox and Friends” who were interviewing Trump’s supporters at Benny’s on the Beach restaurant in Florida.

“Thank you Lake Worth, Florida. @foxandfriends,” the president wrote.