Congress has initiated a full-blown criminal investigation into claims that senior FBI and DOJ officials orchestrated a baseless Democrat-led probe into alleged ties between President Trump and Russia.

A group of House Republicans has gathered secretly for weeks in an effort to build a case that senior officials mishandled the contents of the Trump-Russia dossier that led to the justification of the Mueller probe.

Politico.com reports: A subset of the Republican members of the House intelligence committee, led by Chairman Devin Nunes of California, has been quietly working parallel to the committee’s high-profile inquiry into Russian meddling in the 2016 presidential election. They haven’t informed Democrats about their plans, but they have consulted with the House’s general counsel.

The people familiar with Nunes’ plans said the goal is to highlight what some committee Republicans see as corruption and conspiracy in the upper ranks of federal law enforcement. The group hopes to release a report early next year detailing their concerns about the DOJ and FBI, and they might seek congressional votes to declassify elements of their evidence.

That final product could ultimately be used by Republicans to discredit special counsel Robert Mueller’s investigation into whether any Trump aides colluded with Russia during the 2016 campaign — or possibly even to justify his dismissal, as some rank-and-file Republicans and Trump allies have demanded. (The president has said he is not currently considering firing Mueller.)

Republicans in the Nunes-led group suspect the FBI and DOJ have worked either to hurt Trump or aid his former campaign rival Hillary Clinton, a sense that has pervaded parts of the president’s inner circle. Trump has long called the investigations into whether Russia meddled in the 2016 election a “witch hunt,” and on Tuesday, his son Donald Trump Jr. told a crowd in Florida the probes were part of a “rigged system” by “people at the highest levels of government” who were working to hurt the president.

The sources familiar with the separate inquiry said it was born out of steadily building frustration with the Justice Department’s refusal to share details of the way the Trump dossier was used to launch the FBI’s investigation of his campaign team last year — or whether it was the basis for any court-ordered surveillance of Trump associates.

The group is relying on the same documents and testimony provided by top Obama administration officials — such as former acting attorney general Sally Yates, former attorney general Loretta Lynch and former UN ambassador Samantha Power — who were grilled as part of the intelligence committee’s broader Russia probe.

It’s unclear how many members of the intelligence committee are participating in the side effort. Lawmakers on the full committee interviewed by POLITICO refused to discuss it.

“I don’t talk about what we do behind closed doors,” said Rep. Mike Conaway (R-Texas), who’s leading the intelligence committee’s bipartisan Russia probe. “I’m not going to talk about that,” said Rep. Peter King (R-N.Y.), another member of the panel.

A congressional aide with knowledge of the meetings said Rep. Trey Gowdy (R-S.C.) was not among the participants. ”While he does believe the FBI and DOJ have recently made decisions worth looking into, he is and will always be a defender of the FBI, DOJ and the special counsel,” the aide said.

Nunes’ office declined to comment about the effort, but he has aired his suspicions about the law enforcement agencies before.

“I hate to use the word corrupt, but they’ve become at least so dirty that who’s watching the watchmen? Who’s investigating these people?” he said in a Fox News interview earlier this month. “There is no one.”

DOJ and FBI officials also declined to comment. Deputy Attorney General Rod Rosenstein defended.. the REST OF IT