[His biggest crime, targeting US citizens for execution without due process. Even to the point of killing a very innocent 16 year old American. I realize that the left doesn't care about murdering children, as witnessed by Waco and Abortion. But to me killing Americans who are not a threat to this country is somehow wrong.
Personal Drone Assassination Program
2 Un-Constitutional, Un-Approved Personal Wars to help Terrorists
Refusal t Enforce Existing law - DOMA and US Immigration Law
Illegally Arming Mexican Drug Cartels
Financing, arming, supplying, training, defending, protecting terrorists
Illegally spying on Americans, the media, the Senate, and the USSC
Illegally using the IRS as a weapon against US citizens he called his 'political enemies'
Illegal Sharing of classified info
Illegal unmasking of Americans
Felony Espionage by Illegally leaking info
Violation of Election Laws by the FBI purchasing Ukraine/Russia-generated Propaganda to use politically
Protecting violent illegals, human traffickers, MS13 Gangs, & sanctuary cities
Releasing the Taliban 5
Paying ransoms to terrorists for release of US hostages
Paying ransoms to Iran for release of US hostages
Contempt of court for violating orders regarding his deep water drilling ban
...and this is nothing but the tip of the proverbial iceberg that was the worst, most criminal administration in US history.