Syrian President Bashar al-Assad is "euphoric" about President Obama's surprise announcement Saturday that he will seek congressional authorization for a limited strike in the war-torn country, Sen. John McCain, R-Ariz., said Sunday on "Face the Nation."

When Mr. Obama said the use of chemical weapons in Syria would mark a "red line" that Assad wouldn't be allowed to cross with impunity, McCain said, "he didn't say, 'It's a red line - and by the way I'm going to have to seek the approval of Congress.' He said it was a red line, and that the United States of America would act. And that's a big difference, and that's one of the reasons why this is so problematic."