On Thursday, Sen. Marco Rubio (R-Fla.) proposed that President Joe Biden should step down from the presidency if he decides not to run for re-election in 2024. What Happened: Rubio’s comments were made during the Republican National Convention in Milwaukee, according to a Politico report. The senator’s remarks come at a time when Biden is facing mounting pressure from his own party to reconsider his re-election bid due to health concerns. Influential Democrats, including former House Speaker Nancy Pelosi (D-Calif.), Senate Majority Leader Chuck Schumer (D-N.Y.), and former President Barack Oba…