Rep. Louie Gohmert (R-Texas) called former special counsel Robert Mueller an "anal opening" ahead of the former FBI chief's public testimony before Congress.

"He's done some irreparable damage to some things and he's got to answer for them," Gohmert told Politico. He is one of 25 Republicans on the House Intelligence and Judiciary committees who get to grill Mueller during the back-to-back hearings scheduled later this month.

The Texas lawmaker added that his reading of the former special counsel's report did little to temper his animosity toward Mueller: "It reinforced the anal opening that I believe Mueller to be."

Lawmakers from both parties will have the opportunity to question Mueller for hours during back-to-back House hearings on July 17 about the findings of his 22-month investigation into Russia's election interference in 2016 and potential obstruction of justice by President Trump.

Democrats want to amplify the contents of Mueller's 448-page report, which details efforts from Trump to gain control of and thwart the probe into his campaign's contacts with Russia.

The report did not find evidence to charge Trump campaign members or associates with conspiring with the Kremlin to meddle in the election.

Mueller did not reach a conclusion on whether Trump obstructed justice in the probe, saying he was precluded from doing so by a Justice Department opinion that says a sitting president cannot be indicted.

Attorney General William Barr ultimately determined the evidence in Mueller's report to be insufficient to accuse Trump of criminal wrongdoing.