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US Senator John McCain, R-AZ, answers a question as Senator Lindsey Graham, R-SC, looks on following their meeting with US President Barack Obama at the White House in Washington, DC, on September 2, 2013. McCain said Monday that Congress's failure to authorize military action in Syria would be 'catastrophic' because it would undermine US credibility. AFP Photo/Jewel Samad (Photo credit should read JEWEL SAMAD/AFP/Getty Images)
US Senator John McCain, R-AZ, answers a question as Senator Lindsey Graham, R-SC, looks on following their meeting with US President Barack Obama at the White House in Washington, DC, on September 2, 2013. McCain said Monday that Congress's failure to authorize military action in Syria would be 'catastrophic' because it would undermine US credibility. AFP Photo/Jewel Samad (Photo credit should read JEWEL SAMAD/AFP/Getty Images)

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McCain lends support, criticism on Syria

Reps. John McCain and Lindsay Graham meet with President Obama over possible action against Syria.

McCain lends support, criticism on Syria

Reps. John McCain and Lindsay Graham meet with President Obama over possible action against Syria.