WASHINGTON — The Senate has quietly stripped a provision from an intelligence bill that would have required President Obama to make public each year the number of people killed or injured in targeted killing operations in Pakistan and other countries where the United States uses lethal force.

The move highlights the continued resistance inside the government about making these operations, primarily carried out using armed drones, more accountable to public scrutiny. In a letter to the Senate earlier this month, James R. Clapper, the director of national intelligence, expressed concern that a public report would undermine the effectiveness of the operations.

The provision, passed by the Senate Intelligence Committee last year as part of its authorization bill, required Mr. Obama to make public an annual report on “the total number of combatants killed or injured during the preceding year by the use of targeted lethal force outside the United States by remotely piloted aircraft.” The provision was the same for civilians killed or injured. But officials said that the provision encountered almost immediate resistance both from intelligence officials and Republican lawmakers, some who have fought against any changes to the way the targeted killing program has been managed.

Senator Dianne Feinstein, the California Democrat who leads the Intelligence Committee and who originally offered the provision, agreed to take it out of the authorization bill to enable it to be passed unanimously.