The Republican-led U.S Senate is set to reject the national emergency Donald Trump declared to build his Mexico border wall, likely forcing the U.S president's first veto, Majority Leader Mitch McConnell said on Monday.
The House of Representatives, which is controlled by Democrats, passed the so-called resolution of disapproval and sent it to the Senate, which is expected to vote in the coming weeks.
Senate Republicans have a 53-47 advantage. But four of them have now announced they will vote with Democrats to block Trump, who is seeking to bypass Congress to unlock funds for construction of a wall on the U.S-Mexico border that he insists will reduce illegal immigration and drug trafficking.
Several other Republicans, while stopping short of announcing they would vote against Trump, have expressed deep concerns about his move, arguing it is a blatant attempt to expand executive authority.
With Senator Rand Paul becoming the fourth Republican on board, the resolution of disapproval is now likely to be sent to Trump's desk, forcing the president into the tricky position of vetoing the measure and acting in clear opposition to Congress.
Each chamber would then need to deliver two-thirds majorities to override Trump's veto -- an exceedingly high hurdle.
(with news agency inputs)