Today I am old enough to be a member of the US Congress. Yesterday I was too young to serve as a representative of the people, despite being older than around 30%of them. I'm still too young to serve as Senator or President, because it would be just awful if people were represented by someone close to their own age.
(I hope this internet doesn't get stuck in clogged tubes for several days. If it does, I apologise for the lateness. It's those damned kids and their MySpaces.)