Members of Congress say they will review military and economic aid to Pakistan in response to President Pervez Musharraf’s weekend crackdown on his political opposition.

One top appropriator, Sen. Patrick J. Leahy, D-Vt., called for a halt to aid until Musharraf reverses himself.

“U.S. aid to the Musharraf government should stop until constitutional order, civil liberties and judicial independence are restored, until political prisoners are released, and until free and fair elections are allowed,” Leahy, chairman of the Senate Appropriations State and Foreign Operations Subcommittee, said in a statement.

But in apparent recognition of the critical role that Pakistan plays in the war against terrorism, most influential lawmakers did not immediately propose a cutoff or reduction.

“In light of President Musharraf’s disturbing actions, Congress and the Department of State should review all relevant economic and military aid from which Pakistan currently benefits in order to ensure that taxpayers’ money is advancing American interests in the region,” Nita M. Lowey, D-N.Y., chairwoman of the House Appropriations State and Foreign Operations Subcommittee, said in a statement.

Since the Sept. 11 terrorist attacks, when Musharraf joined the United States in its war against terrorism, Washington has provided at least $10 billion in aid, not including covert funds, according to an August study by the Center for Strategic and International Studies. At least half the money has gone to reimburse Islamabad for operations along the Pakistan-Afghan border in support of U.S. military operations in Afghanistan. The administration has requested an additional $60 million for those operations in its fiscal 2008 war supplemental.

Administration officials said they were reviewing U.S. aid programs in light of the crackdown but appeared unlikely to do much to upset Pakistan’s willingness to cooperate against terrorism.

Bush on Monday urged Musharraf to hold elections as soon as possible. “At the same time,” he added, “we want to continue working with him to fight these terrorists and extremists, who not only have tried to kill him but have used parts of his country . . . to launch attacks into Afghanistan, and/or are plotting attacks on America.”

A number of lawmakers have been critical of Musharraf’s previous crackdowns on political opposition but have so far taken few steps this year to punish him by withholding aid.

Under the original draft of the $34.2 billion fiscal 2008 State-Foreign Operations spending bill (HR 2764), the House version called for $250 million in military assistance instead of the administration’s requested $300 million because of Musharraf’s decision in March to suspend Pakistan’s chief justice of its Supreme Court.

But the full amount was eventually restored and approved as part of the House Appropriations panel’s June 12 action on the bill.

The Senate version also would allocate $300 million for Pakistan military assistance. But Leahy warned Musharraf in a Sept. 28 letter that aid to Pakistan would be tied to its adherence to democratic principles.

Democratic leaders in both chambers blamed Bush for not doing enough to stop the new political crackdown in Pakistan.

“The Bush administration enabled Musharraf’s delusion by ignoring his undemocratic acts and lack of internal support in exchange for his assistance in efforts against terrorism,” said House Speaker Nancy Pelosi, D-Calif.

But Duncan Hunter of California, the ranking Republican on the House Armed Services Committee, cautioned against abandoning Musharraf, noting that the country has nuclear weapons that must be secured. The House Foreign Affairs Committee will discuss Pakistan at a Nov. 7 hearing, where Deputy Secretary of State John Negroponte is slated to testify.

Josh Rogin contributed to this story.