Rep. Darrell Issa, R-Calif., on Friday downplayed President Trump's complaint that the special counsel investigating Russia's election meddling is a "witch hunt," but agreed that the move could uncover things that the Trump administration would rather keep covered.

"All special prosecutors turn over a lot more rocks than anybody else in the executive branch wants," Issa said. "The reason that the old statute... the Kenneth Star statute, expired was because of that tendency to turn over rocks even without being asked."

Even though the investigation may stretch beyond what might be considered as the natural scope of the investigation, Issa said from his point of view that wasn't necessarily a bad thing.

"I think the American people deserve the scope to be as broad as necessary to regain confidence in our elected officials, in our appointed officials, in our elections. The deputy AG (Rosenstein) said it very well, his reason for doing this appointment is as much about returning public confidence."

"This is the single greatest witch hunt of a politician in American history!" Trump tweeted on Thursday, shortly after former FBI Director Robert Mueller was named as special counsel to complete the FBI's investigation into Russian meddling in the 2016 election.

Issa spoke to reporters after House members met with Deputy Attorney General Rod Rosenstein, who briefed lawmakers about the reasons behind Trump's decision to fire former FBI Director James Comey. Members of the senate had a similar briefing on Thursday.