In the fourth century, St. Ambrose of Milan spoke truth to power. U.S. bishops could learn something from him.On Saturday, New Mexico state Sen. Joe Cervantes, a Democrat from Las Cruces, tweeted that because he voted to repeal a state law that criminalized abortion, he was denied communion by Bishop Peter Baldacchino, apparently after several warnings (something the senator conveniently neglected to mention).I was denied communion last night by the Catholic bishop here in Las Cruces and based on my political office. My new parish priest has indicated he will do the same after the last was run off. Please...