Anthony Bernal, senior aide to former first lady Jill Biden, is set to testify Wednesday after he was subpoenaed by Republicans on the House Oversight Committee as part of their investigation into former President Joe Biden’s mental fitness. Audrey Fahlberg, politics reporter for National Review, joins NewsNation’s Blake Burman to discuss the latest on the investigation. #Biden #AnthonyBernal #JillBiden Start your day with "Morning in America," NewsNation's live three-hour national morning newscast hosted by Markie Martin. Weekdays starting at 6a/5C. #MorningInAmerica NewsNation is your source for fact-based, unbiased news for all Americans. More from NewsNation: newsnationnow.com Get our app: trib.al/TBXgYpp Find us on cable: trib.al/YDOpGyG How to watch on TV or streaming: trib.al/Vu0Ikij