The troop surge was authorized by Bush?
Since Jan 20, 2009 Bush is no longer able to decide whether force will be used or not. From that point on, somebody else needs to decide, and SJ Res 23 says it has to be “the President”.
Congress authorized the use of force, not the President. President Bush committed a certain number of forces to combat operations in Afghanistan. No further Presidential committment is required by law to continue the existing combat operations in Afghanistan. The Secretary of Defense and the Combatant Commander in Afghanistan have all the statutory authority they need to carry out the existing mission. (Unless the President orders them to withdraw from combat.)
The Combatant Commander in Afghanistan felt that additional forces were necessary to successfully complete the mission. He requested additional forces from the Secretary of Defense. The SECDEF asked the President if he would agree to commit additional forces. The President agreed to commit an additional 30,000. Once the President made that committment, the SECDEF had the statutory authority to deploy additional forces. No authorization to use force was necessary from the President. No order of deployment was necessary from the President.