Insurgent members of President Donald Trump’s get together have helped move a vote to reject his declaration of an emergency on the US-Mexico border.
Twelve Republican Senators broke get together ranks to facet with Democrats, approving a proposal to revoke the proclamation by 59-41.
The Democratic-controlled Home of Representatives final month backed the measure.
Following Thursday’s vote, Mr Trump tweeted: “VETO!”
Congress wants a two-thirds majority of each chambers to override a presidential veto, which is seen as unlikely on this case.
Nonetheless, the defeat can be seen as an embarrassing loss for the president on his signature home challenge.
It comes only a day after the Senate rebuked him on international coverage by approving a invoice to finish US help for the Saudi-led coalition in Yemen.
The Republican rebels on Thursday have been Mitt Romney and Mike Lee of Utah, Marco Rubio of Florida, Roy Blunt of Missouri, Lamar Alexander of Tennessee, Pat Toomey of Pennsylvania, Rob Portman of Ohio, Jerry Moran of Kansas, Susan Collins of Maine, Lisa Murkowski of Alaska, Rand Paul of Kentucky, and Roger Wicker of Mississippi.
Thom Tillis of North Carolina modified his thoughts minutes earlier than the vote and mentioned he would oppose it.
The Republican president declared the emergency on 15 February after Congress refused funding for a wall on the US-Mexico border, a key marketing campaign pledge.
He goals to avoid Congress and construct his long-promised barrier by raiding navy budgets.
It may unencumber virtually $8bn (£6bn) for the wall, which remains to be significantly in need of the estimated $23bn value of a barrier alongside virtually 2,000 miles (three,200km) of border, however excess of the almost $1.4bn begrudgingly allotted final month by Congress.
Earlier on Thursday Mr Trump referred to as Democrats “border deniers” and mentioned any Republican opposing him can be casting “a vote for Nancy Pelosi”.
He says the barrier is required to fight unlawful immigration on the southern border which he has described as a “disaster”.
Democrats say the declaration is unconstitutional, Mr Trump has manufactured the border emergency and a wall can be a boondoggle.
The decision to revoke the declaration handed the Home by a margin of 245-182 in February. 13 Republicans sided with Democrats.
Lawmakers used a provision from the Nationwide Emergencies Act to overrule the president.
Most Republicans supported Mr Trump’s resolution and accused Democrats of ignoring an emergency on the border.
Senate Majority Chief Mitch McConnell says the declaration is “the predictable and comprehensible penalties of Democrats’ resolution to place partisan obstruction forward of the nationwide curiosity”.