Well it turns out that former President Bill Clinton might just be a Brony. Clinton was a guest on NPR's 'Wait Wait... Don't Tell Me!' this weekend where guests are asked about things they should have no knowledge of.
From the transcript:
"So you're a former president, you're a Rhodes scholar, you're famously well informed. What could we be sure that an accomplished person like you would know nothing about? And then the answer came to us: the TV show "My Little Pony: Friendship is Magic."
With three correct answers, Clinton is definitely a Brony. Skip ahead to the seven minute mark to hear the former President answer questions about "My Little Pony."