All Steve and Bridget Tennes want is to sell their apples, peaches and blueberries at a Michigan farmers’ market without being required to get into the gay-wedding business, and they’re hoping for an assist from Colorado baker Jack Phillips. The Tenneses, who make their home on the Country Mill Farm with their six children, contend that their Catholic faith has been maligned by East Lansing officials who have sought to bar them from the farmers’ market over the couple’s refusal to host same-sex ceremonies on their property. That’s where Mr. Phillips comes in. It was the state’s animus toward the...