text:  closest advisors reportedly helping him to shake the cobwebs off. In a press call yesterday, the Trump campaign said they expect Biden to be ready, saying his muscle memory will kick in after 50 years in politics. Fox's Jackie Heinrich. Immigration expected to be a key topic during the debate. The Biden administration attempting to assure voters. We are imposing stricter consequences for those who cross the border without authorization. Homeland Security Secretary Alejandro Mayorkas visiting Tucson, Arizona today.