Sen. John Cornyn (R-TX) on Sunday insisted that he did not mean to disrespect President Joe Biden when he suggested that someone else is in charge of the federal government. Fox News host Chris Wallace asked Cornyn about the tweet during an interview on Fox News Sunday. "My question," Wallace asked, "is that helpful to be sending out a tweet questioning President Biden's mental faculties?" "Well, Chris, thank you for the question," Cornyn replied.