Sen. John McCain, a leading advocate of sending more U.S. troops to Iraq, said Thursday he'll try to blunt the impact of proposed Senate resolutions opposing a buildup with a new resolution of his own. McCain, an Arizona Republican, said he will propose benchmarks for Iraq's government to meet as part of the new push, and he also will seek to increase congressional oversight of the war. "One of the areas we really want to work on is setting some benchmarks, so the American people and Congress will know if we're making progress or not," McCain said.