1. Obstruction of Justice.
2. Violation of the Emoluments Clause.
3. Advocating illegal violence, giving aid and comfort to white supremacists, and undermining constitutional right to equal protection under the law.
5. Abusing the pardon power.
6. Recklessly threatening nuclear war.
7. Directing law enforcement to investigate his political adversaries.
8. Undermining press freedom.
10. Making & directing illegal payments to affect the 2016 election.
If those 10 legal grounds are not enough for @SpeakerPelosi & @RepJerryNadler to start #ImpeachmentHearings then they need to stand down.