White House Director of Legislative Affairs Marc Short said in a Sunday show interview that special counsel Robert Mueller Robert (Bob) MuellerCNN's Toobin warns McCabe is in 'perilous condition' with emboldened Trump CNN anchor rips Trump over Stone while evoking Clinton-Lynch tarmac meeting The Hill's 12:30 Report: New Hampshire fallout MORE’s investigation into Russia's election interference has exceeded the original scope of the probe.

“I think that we all have frustrations that we believe that the scope has gone well beyond what was intended to be investigations into meddling in the election,” Short told NBC’s “Meet the Press.”

ADVERTISEMENT

“And I think that the House and Senate have had their own investigations. The House has completed those. We’re anxious for the Senate to complete its.”

Short during the interview maintained the White House’s position that President Trump Donald John TrumpOmar fires back at Trump over rally remarks: 'This is my country' Pelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare Trump mocks Biden appearance, mask use ahead of first debate MORE has no intention of firing Mueller or Deputy Attorney General Rod Rosenstein Rod RosensteinDOJ kept investigators from completing probe of Trump ties to Russia: report Five takeaways from final Senate Intel Russia report FBI officials hid copies of Russia probe documents fearing Trump interference: book MORE, who appointed the special counsel.

But the White House has also said Trump believes he has the power to fire Mueller, a remark that set off alarm bells among lawmakers earlier this month.

Short also argued that the investigation has produced “no evidence of collusion.”

“Taxpayers spent millions of dollars on this investigation. And to date we continue to cooperate without evidence of collusion,” Short said. “So yes. I think the president expresses a lot of frustration with where the special counsel investigation is.”

Sen. Susan Collins Susan Margaret CollinsSenate GOP aims to confirm Trump court pick by Oct. 29: report The Hill's Campaign Report: GOP set to ask SCOTUS to limit mail-in voting Senate GOP sees early Supreme Court vote as political booster shot MORE (R-Maine) disagreed with Short, saying on "Meet the Press" that Mueller is "staying within the parameters."