This morning on Laura Ingraham’s show, I sidestepped a question on this in order to make — not very artfully, I’m afraid — a point I wanted to fit in before the end of the interview. Suffice it to say, I haven’t seen any evidence that gay marriage has an enduring impact on the local economy either way. In the first six months or so, as the backlog of same-sex couples who have wanted to marry clears, I imagine the wedding industry receives a noticeable boost. This will probably be especially true in California, since there is already a defense-of-marriage amendment on this November’s ballot. But after the first six months or so, gay marriage tends to become a fringe phenomenon. I’d be interested in any economic literature that reinforces or contradicts my impressions.