Lindsey Graham, perhaps the Senate's leading hawk on military intervention in Syria, says the most important part of U.S. strategy there is "supporting vetted opposition forces." Bob Corker, ranking Republican on the Senate Foreign Relations Committee, says he is dismayed by "the lack of support we are giving to the vetted moderate opposition." The committee's amendment to the intervention resolution, authored by John McCain, calls for strengthening the "vetted elements of Syrian opposition forces."In Washington, use of the word "vetting" is usually confined to unknown political candidates and cabinet nominees.