1. It is NOT necessary that the President, other officers in the executive branch, or federal judges commit a crime before they may be impeached & removed from office.

Federalist Paper No. 66 (2nd para) & Federalist No. 77 (last para) show that the President may be impeached & removed for encroachments, i.e., usurpations of power.

Federal judges may also be impeached & removed for usurpations of power (Federalist No. 81, 8th para).

Throughout The Federalist Papers, it is stated that impeachment is for “political offenses”.

Read more:

Impeachment: All you need to know (and you do need to know it).