Canada Revenue Agency is warning churches to be silent on moral issues when they become political issues. So they have to keep quiet at present about “gay marriage,” at least if they’re on the wrong side. It’s not clear how far the principle reaches. Do the Catholics lose their tax exemption if they deny communion to pro-abortion types. Or suppose someone else with special tax status for another charitable, public-spirited non-political reason, a research institute or medical or bar association for example, makes a statement that’s relevant to the issues in an election. Do they get in trouble too?