text:  Persistent worries about the president. I'm Jack Callahan, Fox News. Concerns among Democrats reported to be growing following President Biden's debate performance Thursday, as Fox's Madeline Rivera reports. He told donors at one of his fundraisers in the Hamptons, I understand the concern about the debate. I get it. I didn't have a great night, but neither did Trump. I still believe this nation is honest and decent, he said, adding Donald Trump will destroy democracy. I will defend it.