Some Republicans are demanding the release of a FISA memo after Fox News host Sean Hannity described allegations of government surveillance abuse as "worse than Watergate."

Rep. Mark Meadows (R-North Carolina) and Rep. Steve King (R-Iowa) said on Twitter they've seen a classified report written by the House Intelligence Committee about alleged Foreign Intelligence Surveillance Act abuses related to the FBI and accusations that President Donald Trump's campaign colluded with Russian officials.

"What I saw is absolutely shocking," Meadows tweeted late Thursday night. "This report needs to be released--now. Americans deserve the truth."

"The sickening reality has set in," King wrote. "I no longer hold out hope there is an innocent explanation for the information the public has seen. I have long said it is worse than Watergate."

Hours earlier, Hannity opened his Fox News Channel show with a call for Special Counsel Robert Mueller to end his "witch hunt." He claimed the four-page memo included text messages from FBI agent Peter Strzok, who was part of the investigation into Hillary Clinton's use of a private server, that suggest the so-called "Steele dossier" was the pretext for FISA warrants.

"Our sources are telling us that the abuse of power is far bigger than Watergate," Hannity said on his TV show Thursday. "Remember, Watergate was a third-rate break-in. What we're talking about tonight is the systematic abuse of power, the weaponizing of those powerful tools of intelligence and the shredding of our Fourth Amendment constitutional rights."

The Hill reports Hannity and other Trump supporters have repeatedly accused President Barack Obama's administration of using FISA warrants to spy on the Trump transition team and the Trump campaign in support of Clinton, a Democratic presidential candidate. Former members of the Obama administration have vehemently denied the allegations.

"This is far worse than Watergate," the "Hannity" host argued. "This is an abuse of surveillance and intelligence to win an election. It is a massive abuse of power, and it was all done by just a few people who think and thought they knew better than you about who should be the president of the United States... It is the biggest national scandal by far in our lifetime."

"The special counsel, Robert Mueller, and his band of Democratic witch hunters never should have been appointed and they need to be disbanded immediately."

According to CBS, Rep. Adam Schiff (D-California) has called the memo misleading and inaccurate. He said the House Intelligence Committee voted Thursday along party lines "to grant House Members access to a profoundly misleading set of talking points drafted by Republican staff attacking the FBI and its handling of the investigation."

CBS reports the Senate voted 65-34 on Thursday to reauthorize the Foreign Intelligence Surveillance Act, sending the bill to President Trump's desk.