To Platinum Coin a Phrase

I just signed a petition asking Barack Obama to have the Treasury mint a $1,000,000,000,000 platinum coin.

But whose face should be on the coin ?

Duncan Black suggests Ronald Reagan (just for giggles)
Josh Barro (thanks for the RT) suggests Mwai Kibaki 

I was thinking of maybe
Ron Paul (he likes coins) or
Rudolf Havenstein (he liked large denominations)

But I think we really have to honor a senator who appreciates money  our heritage and tell a pun and order the mint to mint a  DeMint coin.