"This is your fault," Wisconsin Senator Ron Johnson reportedly told Senate Majority Leader Mitch McConnell at a private Republican luncheon.
"Whether it amounts to criminal conduct, clearly the efforts of the House Republicans were designed to impede and throw sticks into the spokes of the Mueller investigation," Democratic Senator Sheldon Whitehouse said.
Johnson has previously met with other Republican representatives and former Interior Secretary Ryan Zinke.
"The only time the president is not shooting himself in the foot on the Russia investigation is when he's reloading the gun," Mike Rogers, a former GOP congressman, told CNN.
"I would hate to see it," Republican Senator Ron Johnson from Wisconsin said. "I would prefer not, primarily because, if we do that, it's going to go to court."
"This is a fundamental problem for the Republican Party now."
"They are hiding out. They want to hide behind the president instead of doing their jobs as leaders in a co-equal branch of the government," Democratic Senator Chris Van Hollen said about Republican leader Mitch McConnell and his caucus.
"People pretend they're winning when they're having their arms and legs hacked off."
Six of the seven biggest drops from November to December were in states that Trump won in the 2016 presidential election.
'As a wealthy man, the president might consider pledging some of his own funds."
"In fact, as another year ends, I'm left wondering: Will 'Christian conservative' be an oxymoron in 2019?"
On Sunday, Trump's lashed out at the Tennessee Republican for badmouthing him on CNN.
"I think the stage is going to be set and we'll see," said outgoing Republican Senator Bob Corker.
The Texas Democratic hopeful voted for GOP bills that Trump critics say have helped big banks, undermined the fight against climate change and supported the president's anti-immigrant agenda.
State Sen. Dinah Sykes and Rep. Stephanie Clayton announced on Facebook their decision to change their party affiliation.
It wouldn't be the first time—the South Carolina GOP canceled a presidential primary in 2004, when President George W. Bush ran for re-election.
"With all due respect, ISIS is not defeated in Syria, Iraq, and after just returning from visiting there—certainly not Afghanistan," the GOP senator from South Carolina said.
34 percent of Republicans said they would use their own money to privately fund a border wall, and 10 percent of Democrats said they would contribute.
U.S. Representative-elect Dan Crenshaw (R-Texas) said the First Amendment "is the backbone of American exceptionalism."
"This is nothing less than a power grab by Republicans," said Catherine Vaughan of Flippable. "It flies in the face of what voters decided in November and obstructs the democratic process by circling the wagons around systemic conservative efforts to gerrymander Wisconsin and restrict voter access."
"She would have been a legitimate target for FISA [Foreign Intelligence Surveillance Act] surveillance," Asha Rangappa explained. "Anyone talking to her at that time would be captured on that as well."
"What they call the membrane around Trump is failing, and the membrane is the group of people they put around Trump to protect him from himself," David Brooks told PBS News Hour.