Senate Approves Limiting Rights of U.S. Detainees
Senate votes, 49 to 42, to strip captured 'enemy combatants' at Guantanamo Bay of right to challenge their detentions in United States, principal legal tool given to them last year by Supreme Court; vote on Sen Lindsey Graham's amendment to military budget bill comes at time of intense debate over government's treatment of prisoners in American custody worldwide, and just days after Senate passes Sen John McCain's measure banning abusive treatment of them; Graham's measure, if approved in its current form by both Senate and House, would nullify Supreme Court's June 2004 opinion; it would also void habeas corpus motions filed by 200 detainees; vote comes same week Supreme Court announces it would consider constitutionality of war crimes trials before Pres Bush's military commission for certain detainees; legal experts say that case might never be decided by court if Graham amendment becomes law; Senate Democrats led by Jeff Bingaman say they would seek another vote to gut part of Graham's measure that bans Guantanamo prisoners from challenging their incarceration by petitioning in civilian court for writ of habeas corpus (M)

