I’m on the e-mail list for the “Alliance for Main Street Fairness,” a group that wants federal legislation to let states tax Internet sales even when the seller has no substantial physical preference in the taxing state. I think this cause is misguided – see here for a detailed examination of the issues — but there’s no denying the group has serious political momentum behind it. The latest email includes a list of Republican governors who have endorsed the bill, including Christie (N.J.), Snyder (Mich.), Bentley (Ala.), Sandoval (Nev.), Haslam (Tenn.), LePage (Me.), McDonnell (Va.), Daniels (Ind.), Deal (Ga.), Haley (S.C.), Otter (Idaho), and Daugaard (S.D.).