In Congress, Republicans are split between hawks such as McCain and tea party isolationists such as Sens. Rand Paul of Kentucky and Ted Cruz of Texas. In between there is no clear picture either, with moderates like Sen. Bob Corker of Tennessee voicing opposition to a U.S.-enforced no-fly zone over Syria while others say it is time to act.
On Egypt, Paul, Cruz and 11 other senators voted to halt all U.S. aid to military leaders last month, but they were defeated as a majority of Republicans and all Democrats backed continued assistance. Many in both parties stressed the importance of maintaining U.S. leverage and supporting Israel's security. Since then, however, McCain and some others have switched sides, saying U.S. funds now should be suspended given the harshness of the Egyptian government's crackdown on Islamist opponents.
Among Democrats, Sens. Patrick Leahy of Vermont and Carl Levin of Michigan believe U.S. law compels a halt in aid to Egypt until democracy is restored. Most of their colleagues disagree. On Syria, some in Obama's party see the president wading dangerously toward war by authorizing weapons deliveries to the rebels, while hawks and humanitarian interventionists believe he is doing too little.
Associated Press writer Bradley Klapper contributed to this report.