Congressman Sean Duffy (R-Wis.) criticized the special counsel investigation of President Trump.
GWU Professor Jonathan Turley said the probe, headed by former FBI Director Robert Mueller, now includes a litigator who has been reprimanded for obstruction in past cases.
He and another new member of Mueller's team reportedly also donated thousands of dollars to Democratic candidates.
"This seems more like an effort to prosecute Donald Trump," Duffy said.
"What the hell are we investigating?" he asked, saying that ex-FBI chief James Comey testified that there is no evidence of collusion between Trump and Russia.
"Why are we going through with this charade?" Duffy asked.
He called the probe a Democratic effort to undermine Trump's electoral victory and stall his agenda.