President Trump warned on Thursday that other Republicans who vote for the cancellation of his national emergency declaration at the US-Mexico border are politically "endangered".
Trump's comments come as the Senate prepares to vote on a move to thwart the president's use of the declaration to allocate billions of dollars more to the funding of border gates than Congress has allowed.
"I think it's really very dangerous for people to vote against border security," Trump said in an interview with Sean Hannity of Fox News. "I really think Republicans who vote against border security and the wall, I think you know, I am able to predict things, I think that they put themselves in great danger."
The interview was recorded before Trump's departure from his summit with North Korean dictator Kim Jong Un and is due to air on Thursday night.
The House voted on Tuesday 245 against 182 for the Trump Resolving Resolution, with 13 Republicans joining the Democrats to cancel his order.
Three Republicans in the Senate have announced their intention to vote for the resolution – Thom Tillis (N.C.), Susan Collins (Maine) and Lisa Murkowski (Alaska) – while several others are hesitant.
Those who support the resolution fear that Trump's declaration of urgency may be cited as a precedent by future Democratic presidents to silence Congress about the problems they can not cope with.
Trump issued the emergency statement on Feb. 15 as part of an agreement to keep the government open after a 35-day partial closure at Christmas and a good part of January.
The president agreed to sign a spending bill that would maintain government funding until September 30 and provided $ 1.375 billion for the construction of fences for a distance of 55 miles along the border with Texas but he needed billions more.
The administration plans to reallocate an additional $ 6.7 billion from several sources, including $ 3.6 billion from military construction projects accessed through the emergency declaration.
Senators Marco Rubio (Florida) and Mitt Romney (Utah) are among the Senate Republicans who questioned Trump's strategy but did not commit to voting to cancel the emergency declaration.
Earlier this week, Rubio said that he opposed the concept of "separation of powers" and opposed the way the money transferred from other accounts for paying the wall would leave these other projects underfunded. "You do not solve a problem by creating another," said Rubio.
Trump's comments on Thursday testify to the rise of White House rhetoric against Republicans who believe him under the seal of his campaign promise to build a southern border wall.
On Wednesday, White House advisor Kellyanne Conway sharply criticized Republicans in the House for failing to provide sufficient funds to Trump when they controlled the chamber and used that to justify his emergency declaration.
"There is no doubt that the Republican House failed, and they did not allow us to secure the border, but they also failed to keep its promise to get us this money for the wall," Conway said at the time. 39, an appearance on Fox News. "They completely lied about it."
Erica Werner contributed to this report.