GOP Leader: We'll Evaluate Bush Iraq Plan In "September Or October"

"Over the course of the next three to four months, we'll have some idea how well the plan's working. Early signs are indicating there is clearly some success on a number of fronts," he said.

But, he added, "By the time we get to September or October, members are going to want to know how well this is working, and if it isn't, what's Plan B."