US President Barack Obama is expected to invite Senator John McCain to the White House today to help sell to Congress the idea of a US military intervention in Syria. Members of Congress in both parties said they would not be able to support the current draft of a resolution authorizing Obama to launch a military strike. John Kerry, the US secretary of state, and Chuck Hagel, the secretary of defense, will both appear before Congress to make the administration's case for war on Tuesday.
Part of their drive includes winning over John McCain, who has called for the US to intervene forcefully to overthrow Bashar al-Assad and said he would oppose "isolated military strikes that are not part of an overall strategy" to defeat the regime.
USA Today