 Fox's Mark Meredith. Tonight, former President Trump takes the stage and wraps up the party's convention. President Biden gets a medical diagnosis at a very inopportune time. In the midst of his campaign, he tested positive for COVID with mild symptoms. The White House says he will self-isolate, but is still able to perform his presidential duties. No word if Democratic Senator Bob Menendez will heed calls for him to resign following his conviction for bribery and corruption.