[VRWCmember]

the law says that no one can be put on money until they've been dead for a certain period of time (I don't know how long).

Well, JFK was killed 11/22/63 and his portrait appeared on the half dollar beginning in 1964.

[RonF]

True. He was a special exception passed by Congress in some fashion, probably due to the fact that he was killed in office, something that Reagan almost fell victim to, but avoided.