U.S.-Afghan security pact hits impasse as time runs out --- (Reuters) - Afghan President Hamid Karzai has rejected a provision of a U.S.-Afghan security pact, putting the entire deal in jeopardy just days before the country's elite gather to debate it, a senior Afghan official and a Western diplomat said. -- The question of whether foreign troops will be able to search Afghan homes after NATO's combat mission ends next year has long been a sticking point of an agreement setting out the terms under which remaining U.S. forces will operate there. -- But in a series of meetings over the weekend the enter-and-search issue emerged as the biggest roadblock facing the security pact as Karzai dug his heels in, the Afghan official, who has been close to the talks, told Reuters. -- "They want a window left open to go into Afghan homes, but the president does not accept that - not unilaterally and not joint," the Afghan official said, referring to house raids by U.S. troops either on their own or with Afghan forces. - More