3. A collision with religious liberty is unavoidable.

Same-sex marriage, like gay rights protections generally, brushes up against objections from people who oppose homosexuality on religious grounds. What if a Salvation Army bookkeeper seeks health benefits for her wife? What if a student at a Baptist college demands married-student housing for his husband? Must religious-affiliated institutions choose between their principles and their nonprofit tax status? It’s a real problem. The myth is that it’s an unmanageable one.

We know this because we have already dealt with it, in the context of abortion. Congress and the states have provided religious-liberty exemptions that let Catholic hospitals, for example, avoid performing the procedure. Many of the same kinds of exemptions can and should be offered in the context of same-sex marriage. Working out the precise balance between gay rights and religious liberty will take some time and effort, but, in the vast majority of cases, accommodations can be offered at acceptable cost to both sides.