Later in the day the Senate Armed Services Committee and the Senate Foreign Relations Committee heard from U.S. Ambassador to Iraq  Ryan C. Crocker and General David H. Petraeus, Commanding General of the Multi-National Force in Iraq.  The hearings had implications for the ongoing presidential campaign; McCain is ranking member of the Armed Services Committee, Sen. Hillary Clinton (D-NY) is a member of Armed Services, and Sen. Barack Obama (D-IL) is a member of the Foreign Relations Committee.