The top U.S. commander in Afghanistan is preparing a new strategy that calls for major changes in the way U.S. and other NATO troops there operate, a vast increase in the size of Afghan security forces and an intensified military effort to root out corruption among local government officials, according to several people familiar with the contents of an assessment report that outlines his approach to the war.

Gen. Stanley A. McChrystal, who took charge of U.S. and NATO forces in Afghanistan last month, appears inclined to request an increase in American troops to implement the new strategy, which aims to use more unconventional methods to combat the growing Taliban insurgency, according to members of an advisory group he convened to work on the assessment. Such a request could receive a chilly reception at the White House, where some members of President Obama's national security team have expressed reluctance about authorizing any more deployments.

Senior military officials said McChrystal is waiting for a recommendation from a team of military planners in Kabul before reaching a final decision on a troop request. Several members of the advisory group, who spoke about the issue of force levels on the condition of anonymity, said that they think more U.S. troops are needed but that it was not clear how large an increase McChrystal would seek.

"There was a very broad consensus on the part of the assessment team that the effort is under-resourced and will require additional resources to get the job done," a senior military official in Kabul said.

A request for more U.S. troops in Afghanistan could pose a political challenge for Obama. Some leading congressional Democrats have voiced skepticism about sustaining current force levels, set to reach 68,000 by the fall. After approving an extra 21,000 troops in the spring, Obama himself questioned whether "piling on more and more troops" would lead to success, and his national security adviser, James L. Jones, told U.S. military commanders in Afghanistan last month that the administration wants to hold troop levels flat for now.

The Senate Republican leadership has pushed hard to round up votes against her. One top aid to GOP leader Mitch McConnell confirmed that McConnell, at a meeting of conservative groups, asked the National Rifle Association about scoring the Sotomayor vote as a key vote hostile to gun rights. The aid conceded that in asking the question, McConnell was promoting an unusual step that the NRA then took.

The House has voted to rush an additional $2 billion into the popular but financially strapped "cash for clunkers" car purchase program.

The bill was approved on a vote of 316-109. House members acted within hours of learning from Transportation Secretary Ray LaHood that the program was running out of money.