President Clinton told Congress yesterday he is extending beyond a Jan. 23 deadline a national emergency dealing with "grave acts of violence committed by foreign terrorists that disrupt the Middle East peace process." Clinton first declared the emergency on Jan. 23, 1995. In a letter to Speaker of the House Dennis Hastert (R-IL), Clinton said terrorist groups continue to carry out activities that threaten the Middle East peace process and are hostile toward United States interests in the region. "Such...