I can't think of any miracles performed by FDR. Carter got Israel to return land to Egypt with the Camp David Accords, which is nuts when you think about it, created the Department of Education, and solved inflation. Running a successful Presidential campaign on peanuts with the Religious Right behind him could be one also, and I'm sure there are more with his nuclear military career, but three will suffice. And not for nothing, his initials are JC, so maybe canonization isn't quite good enough. If Gabriel ever retires, then perhaps Left Hand of God if it becomes available. Actually there may be some room, as both Jesus and Michael sit on the Right.