Gipper On A Greenback? Why Not?

There are arguments to be made for and against whether Ronald Reagan should replace one of the crusty old dudes on U.S. paper money.

Even though Reagan's name seems to be on everything short of my scrotum, I can see no reason why he can't bump Ulysses S. Grant from the $50 bill, but not the $10 bill because Alexander Hamilton was a really important dude, although less because of being the first Treasury secretary than the author of most of the Federalist Papers.