Peter Schweizer, president of the Government Accountability Institute and senior editor-at-large at Breitbart News, advised the Senate to call on Hunter Biden to testify about business dealings in China and Ukraine, offering his recommendation in a Wednesday interview on SiriusXM’s Breitbart News Tonight with hosts Rebecca Mansour and Joel Pollak.

The Senate should call Hunter Biden to testify before a committee regarding his business dealings in China and Ukraine, advised Schweizer.

“We need to begin at the headwaters of this whole story, which is the simple question: He was brought on the board of the Burisma corporation, he was brought on to do regulatory compliance — which of course he had no background in, [and] he had no background in Ukraine — what precisely was he being paid to do, and why was he hired by Burisma?” asked Schweizer. “That’s the first question that needs to be asked.”