On two separate morning news shows Monday, Sen. Bob Corker (R-Tenn.), the ranking Republican on the Senate Foreign Relations Committee, said he had spoken with White House officials and that the Obama administration is building support among NATO allies to take military action in Syria, whose government has been accused of using chemical weapons on civilians.

"I don't think there's any question in the administration's mind that chemical warfare has been used and that when we're involved, it's surgical, proportional to what has occurred," Corker said on CBS's "This Morning."

"I think response is imminent," he added on MSNBC's "Morning Joe."