The Latest on Congress and President Donald Trump’s proposed border wall (all times local):

10:55 a.m.

Republican Sens. Mitt Romney and Sen. Lamar Alexander have endorsed a resolution passed by the Democratic-controlled House to block President Donald Trump from using emergency powers to fund his long-promised U.S.-Mexico border wall.

That brings to seven the number of Republicans who have announced they will cross Trump on a vote expected for Thursday afternoon, ensuring the measure will pass.

Romney was the GOP’s 2012 presidential nominee and a sometimes critic of Trump; Alexander is among the senior guardians of the Senate as an institution. Lawmakers oppose Trump’s action because they see the power of the purse as Congress’ prerogative.

Romney said that “this is a vote for the Constitution and for the balance of powers that is at its core.”

Trump has promised to veto the measure and is sure to be sustained by his House GOP allies.

The House has already approved the resolution, meaning Trump will be forced to use his veto power for the first time.

GOP Sens. Susan Collins (Maine), Lisa Murkowski (Alaska), Thom Tillis (N.C.) and Rand Paul (Ky.) have said they will back the measure. Sens. Marco Rubio (Fla.), Mitt Romney (Utah), Lamar Alexander (Tenn.), Johnny Isakson (Ga.), Ron Johnson (Wis.), Ben Sasse (Neb.) and Jerry Moran (Kan.) are among the Republicans who could join them.

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10:35 a.m.

President Donald Trump is urging Republican senators to support his emergency declaration for border funding, and says any efforts to change the national emergency law should come later.

Trump tweeted Thursday as the GOP-led Senate appeared set to approve a resolution blocking the border emergency he declared to steer more money to his border wall.

Trump stressed that he will not immediately take up proposals to amend the national emergencies law, which some Republicans have been pitching as a way to limit defections in Thursday’s Senate vote.

Said Trump: “If, at a later date, Congress wants to update the law, I will support those efforts, but today’s issue is BORDER SECURITY and Crime!!! Don’t vote with Pelosi!”

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7 a.m.

President Donald Trump is renewing his threat to veto a congressional resolution revoking his declaration of an emergency at the southern border. Trump had declared an emergency to try to circumvent Congress to access more money for his promised border wall.

The Senate is scheduled to vote Thursday on the resolution, with many Republicans expected to join Democrats in disapproving the declaration.

Trump tweeted early Thursday about “the big National Emergency vote today” in the Senate. He said, “I am prepared to veto, if necessary,” and called the situation at the border “a National Security and Humanitarian Nightmare.”

Trump has not yet vetoed a bill. Overturning a presidential veto requires a two-thirds vote in the House and Senate, but there aren’t enough votes to do so on the border resolution.

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