The New York Times tries to make the case but the facts are pathetically against them:
Last weekend, former President Bill Clinton took to North Carolina phone lines with a recorded message warning of the perils of a constitutional amendment banning same-sex marriage and civil unions. “What it will change is North Carolina’s ability to keep good businesses, attract new jobs, and attract and keep talented entrepreneurs,” Mr. Clinton asserted. “If it passes, your ability to keep those businesses, get those jobs and get those talented entrepreneurs will be weakened.”
That argument landed with a thud, as North Carolina voters resoundingly supported the amendment by a margin of 20 percentage points, and 93 of the state’s 100 counties voted for the proposition that marriage is exclusively between a man and a woman.
... Mr. Clinton’s message that constitutional bans on same-sex marriage are bad for business hardly seems self-evident. North Carolina is perennially ranked at or near the top of the best states in which to do business. Two of its major rivals for the top honor, Texas and Virginia, also have constitutional amendments banning same-sex marriages and civil unions, and Virginia even bans “any marriagelike contract” between unmarried persons. New York and Massachusetts, both tolerant of same-sex marriage, usually rank at or near the bottom of states in which to do business.