Democratic House committee chairmen who want to keep looking into claims of collusion and obstruction on the part of President Donald Trump and his 2016 campaign will not find anything that special counsel Robert Mueller was not able to find over the course of his lengthy investigation, Rep. John Ratcliffe, R-Texas, said Monday.

"Bob Mueller, who had unlimited time, unlimited money, unlimited resources, 40 FBI agents working with 20 federal prosecutors couldn't find any evidence of any crimes," the Texas Republican, a member of the House Intelligence and Judiciary committees, told Fox News' "America's Newsroom." "What in the name of God's green Earth makes anyone think that Adam Schiff, Jerry Nadler, and Elijah Cummings could find what Bob Mueller couldn't?"

Ratcliff noted that in the Senate, where Republicans control the Judiciary Committee, Chairman Lindsey Graham, R-S.C., has already agreed there are questions surrounding the push for the Mueller investigation.

He also called it "disappointing" so many people are saying the investigation is not over and said the House does not need to investigate what Mueller already has.

Ratcliffe said he has spoken with Inspector General Michael Horowitz, and learned he hopes to be finished with his own report on Trump by May or June.

Further, he said John Huber, the U.S. attorney in Utah, has "been dispatched" to look into the potential that "criminal aspects" might have come into play behind the Mueller probe.

"Between those investigations, the American people will hopefully get answers to those questions much sooner than later," Ratcliffe said.