Her comment to reporters came the week after the top U.S. and allied commander in Afghanistan, Army Gen. Stanley A. McChrystal, submitted a classified assessment that lays the groundwork for what is expected to be a request for additional combat forces.

Pelosi and other members of Congress are due to be briefed on the assessment, but she told reporters that a request for additional troops would not be well received.

“I don’t think there’s a great deal of support for sending more troops to Afghanistan in the country or the Congress,” Pelosi said.

Obama has already approved sending 21,000 additional troops for Afghanistan to boost the U.S. force fighting the Taliban to 68,000. There also are 38,000 NATO troops from other countries in Afghanistan, but the war effort is increasingly unpopular in allied countries such as Britain, Germany and Canada.