GOP senator: Mueller 'needs to clean house of partisans'
© Greg Nash

Senate Majority Whip John CornynJohn CornynDemocrats worry a speedy impeachment trial will shut out public Sunday shows - All eyes on Senate impeachment trial Cornyn disputes GAO report on withholding of Ukraine aid: It's 'certainly not a crime' MORE (R-Texas) said Saturday that special counsel Robert Mueller "needs to clean house of partisans" in his investigation of alleged Trump campaign ties to Russia, following the revelation of biased text messages sent by an FBI agent on the case. 

Cornyn took issue with former Attorney General Eric HolderEric Himpton HolderParties to wage census battle with outside groups Welcome to third-world democracy and impeachment Uber settles sexual harassment charges for .4 million MORE "speaking on behalf of the vast majority of the American people" in a recent tweet saying that Republicans should halt their criticism of Mueller, and that there would be political consequences for trying to remove him from the Russia investigation.  

"But Muller needs to clean house of partisans," the senator tweeted.

He had previously tweeted "you don't" in response to Holder's claim.

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Text messages handed over to Congress by the Justice Department reveal that a top counterintelligence agent working under Mueller on the investigation sent anti-Trump, pro-Hillary ClintonHillary Diane Rodham ClintonDemocratic debates are magnet for lobbyists NYT editorial board endorses Warren, Klobuchar for Democratic nomination for president Sanders v. Warren is just for insiders MORE text messages to his then-girlfriend, a fellow FBI employee.

Mueller removed the agent, Peter Strzok, from the investigation when the messages were discovered.

Republican lawmakers this week during a House Judiciary Committee hearing suggested that Mueller is running a tainted investigation, and pushed Deputy Attorney General Rod RosensteinRod RosensteinRosenstein says he authorized release of Strzok-Page texts Journalist alleging Obama administration spied on her seeks to reopen case Rosenstein on his time in Trump administration: 'We got all the big issues right' MORE, who oversees Mueller's team, to consider a second special counsel.