Because most politicians have a criminal or guilty mindset. They fear an armed population. If they were honest and law abiding people, they wouldn’t have a problem with the population owning any kind of firearms.
The fact that politicians do have a problem with citizens owning firearms should tell us all just how much of a bunch of scum bags we truly have for leaders. It also tells just how much we can trust them... which is not at all.
The only politicians I’ll trust are the ones that work diligently to repeal ALL gun control laws. That includes the 1968 GCA and the machine gun ban.