Recall that last year, Indiana passed a state religious freedom restoration act (RFRA), which was the state version of existing federal legislation that passed Congress and was signed into President Bill Clinton with overwhelming bipartisan support. (John McCormack has an explainer of the legislation here.) Though the Indiana law is not in conflict with other LGBT protections, it was decried as an act of bigotry. Journalists started fishing for villains, settling on the religious owners of an Indiana pizza parlor who said they would not (hypothetically) want to cater a gay wedding. Companies such as Apple and Ebay, which have no problem doing business in bastions of enlightened attitudes on gays as Saudi Arabia and Indonesia, threatened to boycott Indiana. (Curiously, they have not also threatened to boycott the existing 21 states with RFRAs.)
Once it became clear that Pence was going to have to make a stand on religious freedom, he folded. Indiana's religious freedom law was gutted at Pence's direction within a week of it being passed.
Source: weeklystandard.com