The code words often used on the Underground Railroad were: “tracks” (routes fixed by abolitionist sympathizers); “stations” or “depots” (hiding places); “conductors” (guides on the Underground Railroad); “agents” (sympathizers who helped the slaves connect to the Railroad); “station masters
Explanation: These laws basically have to go through congress and then be approved. The president makes sure there isn't any similar type of law that was enforced. Hope this helps!