Obviously this jackass doesn't know too many Jews, if he's never had this happen in 26 years. As a Jew, I've run into this on a significant number of occassions, and I can tell you that it's quite alienating and irritating.
His insistence that he must close a supposedly "ecumenical" invocation with "In Jesus' name, Amen" simply indicates that he doesn't understand the meaning of the world.
Crying "censorship" is just a big steaming heap of bull. If he doesn't want to give an ecumenical invocation, he's welcome to not do so in the Statehouse.