The orders, which would be the first steps in undoing detention policies of former President George W. Bush, would rewrite American rules for the detention of terrorism suspects. They would require an immediate review of the 245 detainees still held at the naval base in Guantánamo Bay, Cuba, to determine if they should be transferred, released or prosecuted.
And the orders would bring to an end a Central Intelligence Agency program that kept terrorism suspects in secret custody for months or years, a practice that has brought fierce criticism from foreign governments and human rights activists. They will also prohibit the C.I.A. from using coercive interrogation methods, requiring the agency to follow the same rules used by the military in interrogating terrorism suspects, government officials said.
But the orders would leave unresolved complex questions surrounding the closing of the Guantánamo prison, including whether, where and how many of the detainees are to be prosecuted. They could also allow Mr. Obama to reinstate the C.I.A.’s detention and interrogation operations in the future, by presidential order, as some have argued would be appropriate if Osama bin Laden or another top-level leader of Al Qaeda were captured.
Dramatic, and welcome, change.