Presumptive GOP presidential nominee Donald Trump has remained largely silent following his June 27 debate in which President Biden gave a halting performance – instead allowing fellow Democrats and the media to criticize or raise questions about Biden's age and mental acuity. In the days after the debate two House Democrats – Reps. Lloyd Doggett, of Texas, and Raúl Grijalva, of Arizona – have called for Biden to end his reelection bid, amid reports that donors are poised to stop contributing to the Biden campaign and Virginia Democrat Sen. Mark Warner is requesting a meeting with members of his conference...