The issue focused on whether Obama had fully investigated or engaged in an investigation of Trump's election campaign.

For example, Rep. Marsha Blackburn (R-Tenn.) asked why the Justice Department did not immediately launch a criminal probe into Clinton for her use of a private email server while secretary of state. "There was no cover up," she said.

Rep. Ron DeSantis (R-Fla.), one of two Republicans who voted against Comey's firing, noted that Trump made similar comments about