 Eben Brown, Fox News. Meantime, some House Democrats are responding to President Biden's performance during Thursday night's CNN debate. Fox's Chad Pergram on Capitol Hill. The president's performance in the debate shook the Democratic Party to its core. One senior House Democratic leadership source tells me, quote, those who are closest to the president have not served him well. The source adds, quote, this is not sustainable. The delegates President Biden won in the primaries are only pledged to him right now.