Numerous Senate Republicans say that, like Tillis, they despise Trump’s decision to declare a national emergency to get additional funding for his wall. But most aren’t ready to say they will vote to block him from doing so…

Interviews on Monday with more than a dozen GOP senators who have been publicly critical of Trump’s unilateral maneuver or warned him not to deploy it were cagey about their intentions for what would be a crucial vote in coming weeks on the Senate floor.

Many said they were undecided and still studying Trump’s move to circumvent Congress and score billions more for the border barrier. That suggests the resolution to block him remains just short of the simple majority needed for passage.

“It’s unnecessary, unwise and inconsistent with the Constitution,” said Sen. Lamar Alexander (R-Tenn.), one of the most vocal critics of Trump’s emergency declaration. As to how he will vote, he said: “I’m going to wait to see what the resolution says.”