(CNN) A Senate Republican ally of President Donald Trump said Thursday that he has no concerns about the President's alleged efforts to obstruct the investigation led by special counsel Robert Mueller, saying "it's time to move on" from the two-year-old probe.

Sen. David Perdue, of Georgia, also defended Trump's refusal to comply with subpoenas issued to his administration by House Democrats and said they need to decide if they are going to "legislate or investigate."

Perdue, who was in the Capitol briefly to oversee a pro forma session, said he had read the Mueller report.

"First of all, there was no collusion. There was no evidence of obstruction that they could do anything with," he told reporters as he left the floor. "It's time to move on. It's time to move on."

The points by Purdue -- who is running for reelection this cycle in what could be a competitive race -- are likely to be echoed by other congressional Republicans when they return Monday from a two-week recess that had them out of Washington when a redacted version of Mueller's report was released to the public.

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