Are there any trivia contests in the United States--I'm thinking big
syndicated shows like Jeopardy or Who Wants to Be a Millionaire--open
to non-U.S. residents?  I've got a brilliant friend who's here on a
student visa.  If no TV game shows fit the bill, how about any local
(Wisconsin) knowledge bowls/quiz contests with cash prizes?

I live in Canada and a friend of mine was on Jeopardy.  She's a
Canadian citizen so it seems that non U.S. contestants are possible.

(And she even won her first day)