The US governmental system: HUH ?

A friend and I often share enraged thoughts about Trump; but we almost equally often come back to the fact that there are some unbelieveable (to us, anyway) facts about the .. ahh .. format ? – maybe design of sections of how the US government works, and these act as enablers for him.

For instance: gerrymandering. Someone explain to me how it is that political party members get to redistribute the voting boundaries in their own party’s favour ?

For instance: the leader of the Senate gets to...