Let’s be real, he would be an idiot not to know who the President and vice-President of the United States is, he probably even knows little things like who Putin is, and David Cameron.
It is pretty hard to be an educated, well read man with a global perspective who does not even know who leads the most powerful nation on earth, and is fighting Muslims all over the world.
Let’s be real. There is no way they will be denied Communion. Ain’t gonna happen. That matters only to a tiny minority of conservative American Catholics.