What are the worst laws on the books that are still enforced today? Can be state, local, or federal law.
For me, a few examples come to mind:
Marijuana – Recreational marijuana should be legal. It's pointless to lock people up for it.
Curfew – Local curfew ordinances in my opinion violate the 1st Amendment, specifically freedom of assembly. Also, they don't work. If someone is planning on committing a crime, they are going to commit it. They won't care whether or not they can legally be out at 2 AM.
Campaign Finance – Money does not equal speech. Period.
That is the exact argument against gun control.