[Timesink]

Reagan's not dead yet; 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).

That's for stamps: Dead ten years minimum, except presidents automatically get a stamp on their first birthday after death. The only rule for currency is that you be dead, period. Other than that, the Secretary of the Treasury could replace Ben Franklin with his own grandmother on the $100 bill if he wanted to.

[Conservative til I die]

I think Congress has to vote on design changes. The Treasury doesn't have that much autonomy.