Sen. Bob Corker (R-Tenn.) predicted Sunday the United States will take military action against Syria.
Corker, the top Republican on the Senate Foreign Relations Committee, said he had been in discussions with the administration, and that he believed it would ask Congress for authorization to take military action.
Corker suggested the action would be limited to air strikes and that U.S. forces should not be involved on the ground.
He also said he believed reports of chemical weapons use by the Syrian government this week were real.
"This was real, this was not contrived," Corker said.
Rep. Eliot Engel (D-N.Y.), speaking on the same program, advocated the use of surgical air strikes on Syria.
"I think we have to respond," said Engel.
"I certainly would do cruise missile strikes," he added.
Corker said it was possible the administration would act before Congress returns to Washington in two weeks.
But he said Congress should provide authorization for any actions.
"Congress has had a pass on these kind of activities for a long time," he said. "I think it's time for us to step up."