A major surveillance reauthorization bill is at risk of collapse in the House on Wednesday amid opposition from former President Donald Trump – with conservatives poised to deal yet another blow to Speaker Mike Johnson.

       Trump has urged House Republicans to kill the reauthorization bill ahead of a key procedural vote on Wednesday, adding to headaches for GOP leaders who have struggled to build support for the legislation. There now appears to be sufficient conservative opposition to take down the procedural vote on a rule to govern debate on the bill. The key vote is expected to take place Wednesday afternoon.

       “KILL FISA,” Trump wrote on his social media platform Truth Social.

       If the rule fails, it will mark the fourth time in Johnson’s tenure that the House has defeated a rule vote, a major embarassment for GOP leadership. House Republicans currently have a two-vote margin, but absences on the Democratic side could alter the math for how many defections House GOP leadership can afford.

       House Republicans have been fiercely divided over how to handle the Foreign Intelligence Surveillance Act reauthorization, putting pressure on Johnson to find a path forward amid competing factions within his conference. With the threat of a vote on his ouster looming, the Louisiana Republican’s every move is under even more intense scrutiny, and the speaker has once again found himself odds with his right flank over the surveillance law.

       Johnson had previously announced that the House will take up a FISA reauthorization bill this week. The bill, titled the Reforming Intelligence and Securing America Act, would reauthorize Section 702 of FISA for five years and aims to impose a series of reforms.

       In a sign of the trouble ahead for GOP leaders, however, Republican Rep. Matt Gaetz, has already said he would vote against the procedural vote expected Wednesday afternoon. .

       Additionally, Florida GOP Rep. Anna Paulina Luna wrote on X, “we are killing FISA,” in response to Trump’s Truth Social post. And Tennessee GOP Rep. Tim Burchett told CNN he will be voting no on the rule. When told that would kill it, he said, “good.”

       Johnson told members at a closed-door conference meeting Wednesday morning that he spoke with Trump Tuesday night. But, according to members, Johnson told them they didn’t discuss FISA.

       Authority for Section 702 was extended through April 19 as part of the National Defense Authorization Act.

       The law as it stands allows the US intelligence community to collect the communications records of foreign persons based overseas, but it also allows the FBI to search the data it collects for Americans’ information in what critics have called a “backdoor” search.

       The searches of US persons’ information are governed by a set of internal rules and procedures designed to protect Americans’ privacy and civil liberties, but critics say that loopholes allow the FBI to search the data it collects for Americans’ information — as opposed to from foreign adversaries — without proper justification.

       The complicated politics surrounding the law have long united strange bedfellows: Some conservative Republicans have joined forces with progressive Democrats to push for reforms to the authority, while security-focused Democrats and Republicans have opposed major new restrictions.

       One major sticking point is whether the FBI should be required to obtain a warrant before querying the database for information on US citizens.

       In a sign of how challenging the issue has proved for House Republicans to navigate, leadership pulled a pair of surveillance law bills from the floor in December amid internal GOP divisions. In February, a spokesperson for the speaker said the House would consider FISA reform “at a later date” to allow for more time to reach consensus on a path forward.

       The authority has also become a high-profile political target of conservative Republicans after it became known that a different section of FISA was inappropriately used to surveil Trump 2016 campaign aide Carter Page.

       In his call to “kill FISA,” Trump wrote on Truth Social, “IT WAS ILLEGALLY USED AGAINST ME, AND MANY OTHERS. THEY SPIED ON MY CAMPAIGN!!!”

       “FISA and Section 702 have been essential to intercepting communications of dangerous foreign actors overseas, understanding the threats against our country, countering our adversaries, and saving countless American lives,” Johnson said in a letter to colleagues on Friday. “Our responsibility now is simple: maintain the tool but strictly prohibit future abuses.”

       The speaker went on to say that the bill the House is expected to take up includes reforms “that will establish new procedures to rein in the FBI, increase accountability at the Foreign Intelligence Surveillance Court (FISC), impose penalties for wrongdoing, and institute unprecedented transparency across the FISA process so we no longer have to wait years to uncover potential abuses.”

       CNN’s Lauren Fox contributed to this report.