Lawmakers appearing on the Sunday morning talk shows mostly agreed that the United States should step up its involvement in the conflict in Syria. One such lawmaker, Sen. John McCain (R-Ariz.), charged that President Obama has failed to follow through on a statement that the use of chemical weapons in the conflict would constitute a "red line."

“Unfortunately, the red line that the president of the United States [has] was apparently written in disappearing ink,” McCain said on “Fox News Sunday.” McCain called for a number actions, but urged against the deployment of U.S. troops.

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