Whether English is America's "national language" or its national "common and unifying language" was a question dominating the Senate immigration debate. The Senate first voted 63-34 to make English the national language after lawmakers who led the effort said it would promote national unity. But critics argued the move would prevent limited English speakers from getting language assistance required by an executive order enacted under President Clinton. So the Senate also voted 58-39 to make English the nation's "common and unifying language." "We are trying to make an assimilation statement," said Sen. Lindsey Graham (news, bio, voting record), R-S.C., one...