[gusty]

But it was not the Constitution that decided this. Father Drinan’s religious superiors were uncomfortable with him in Congress. It probably had more to do with Drinan voting against Catholic doctrine on some social issues than anything else. If I remember correctly Drinan was to the Left of Che Guevara.

[robowombat]

No you are correct. The Constitution is mute on the subject so theoretically a cardinal could be President. I think Garfield was a licensed minister at the time he graduated from college. He didn't pursue a clerical career. I know I have read he presided over religious services while an officer in the Civil War.