Hunter Biden showed up on Capitol Hill on Wednesday but said he planned to testify in a public hearing, escalating a standoff with GOP investigators.

President Joe Biden’s son has insisted, through his attorney, that he wants to testify publicly and not in a private meeting. Oversight Chair James Comer (R-Ky.) has denied that request, demanding Hunter Biden sit for a closed-door deposition Wednesday.

“I’m here today to answer at a public hearing any legitimate questions Chairman Comer and the House Oversight Committee may have for me,” Hunter Biden told reporters.