WASHINGTON (AP) — Congress and the Bush administration are taking a second look at U.S. aid to Pakistan in the wake of President Pervez Musharraf's declaration of emergency rule and a crackdown on his political opponents.

However, U.S. officials are concerned about going too far in rebuking a close ally or hurting its ability to pursue terrorists within its borders.

The Bush administration is seeking $800 million for Pakistan for the current budget year. Since 2001 the U.S. has provided Pakistan with an estimated $9.6 billion.

Deputy Secretary of State John Negroponte was scheduled to testify Wednesday about Pakistan before the House Foreign Affairs Committee. It was unclear whether he would announce any changes to U.S. policy.

Musharraf has imposed a state of emergency he says is necessary to prevent a takeover by Islamic extremists. His actions, which include suspending his country's constitution and ousting its top judge, have drawn widespread criticism in Congress.

Sen. Joe Biden, D-Del., the chairman of the Senate Foreign Relations Committee, said he advised Musharraf during a phone call Tuesday to allow elections in January as planned and to restore the rule of law.

''It is clear to me from our conversation that President Musharraf understands the consequences for his country and for relations with the United States if he does not return Pakistan to the path of democracy,'' Biden said.

Rep. Jane Harman, D-Calif., who recently visited the Middle East, said U.S. military and economic aid should be suspended until Musharraf reverses the crackdown.

''President Musharraf must be told to revoke martial law, release the thousands of Pakistanis imprisoned in recent days, restore freedom of the press, relinquish his military position and proceed with democratic reforms,'' Harman said.

Sen. John Kerry, D-Mass., a member of the Foreign Relations Committee, planned to offer a resolution condemning Musharraf's actions.