House Speaker Paul Ryan reiterated his support for special counsel Robert Mueller's investigation on Sunday after President Trump targeting the probe in a series of tweets over the weekend.

"As the speaker has always said, Mr. Mueller and his team should be able to do their job," Ryan spokesperson AshLee Strong told the Washington Examiner.

Trump on Sunday questioned the biases of Mueller’s investigative team which is looking into Russian meddling in the 2016 election.



Why does the Mueller team have 13 hardened Democrats, some big Crooked Hillary supporters, and Zero Republicans? Another Dem recently added...does anyone think this is fair? And yet, there is NO COLLUSION! — Donald J. Trump (@realDonaldTrump) March 18, 2018

Trump also attacked Muellers investigation on Saturday, tweeting that the federal inquiry into whether his campaign colluded with Russia to influence the election "should never have started."

The Mueller probe should never have been started in that there was no collusion and there was no crime. It was based on fraudulent activities and a Fake Dossier paid for by Crooked Hillary and the DNC, and improperly used in FISA COURT for surveillance of my campaign. WITCH HUNT! — Donald J. Trump (@realDonaldTrump) March 18, 2018

The tweets come days after Attorney General Jeff Sessions fired former FBI deputy director Andrew McCabe less than 48 hours before his retirement. McCabe claims he was fired as part of a larger plan to dismantle Mueller's investigation.