Facing intense blowback from his nationalist base, President Trump on Thursday doubled down on his vow to build a wall on the Mexican border — and said there would be no citizenship or amnesty for the 800,000 Dreamers in the US.

“We have to have the wall. if we don’t have the wall we’re doing nothing,” the president said as he arrived in Florida to inspect damage from Hurricane Irma.

“At some point [Democrats] cannot obstruct the wall. To me it is vital. If I don’t get the wall, then we will become the obstructionist,” he added, in an apparent warning to Democrats that the GOP would not cut any deals unless the wall is funded.

“We have to have an understanding that whether it’s in the budget or some other vehicle, in a fairly short period of time, the wall will be funded. Otherwise, we’re not doing any deal,” he said in remarks that aimed to reassure his base.