Answer:
The constitution and the legislative branch
Explanation:
Because the legislative branch is the only unicameral branch in the US government and the constitution set up the branches of government
President Richard Nixon did all of these things except be impeached. Instead, as a result of the Watergate scandal, he resigned while still in office. Many think he would have been impeached had he remained in office.
I forget his name but is was some Spanish guy
All of them besides tribal membership i know it