Whitmer: Biden has 'to prove to people he is up to the moment'

USA TODAY - For more and to sign up click here Nick Robertson Michigan Gov. Gretchen Whitmer (D) called on President Biden to “prove” himself to voters in the coming weeks, as he faces concerns about his health and ability, and some Democrats have called on him to end his campaign. Whitmer, who made clear she still supports the president, said in an MSNBC interview with Alex Wagner on Tuesday that Biden has work…