The comments by Maryland Rep. Elijah Cummings came as Democrats sought to force a House vote to establish an independent commission to investigate Donald Trump’s ties to Russia.

Cummings said the Government Reform and Oversight panel needs to subpoena documents for its Russia probe and summon former FBI Director James Comey for a public hearing.

Cummings reminded reporters that panel chairman Jason Chaffetz held a hearing featuring Comey just 48 hours after Comey announced there was no evidence warranting charges against Hillary Clinton after an investigation found she had improperly handled classified information on a private email server.