Traitor

A list of 40 charges, with links to the supporting evidence, is provided here. They are all significant issues, but I would also add the following:

1. Mishandling and mismanagement of the response to the hurricane in Puerto Rico. 
2. The decision to reject the Paris climate accord. 
3. Invoking phony national security crises to start an ill-conceived and ineffective trade war with China. 
4. Taking money appropriated for the Pentagon to build his wall along the U.S.-Mexico border.
5. Taking money directly and indirectly from foreign governments.
6. Use of executive orders to work around Congress.
7. Obstruction of justice in the Comey and other matters.
8. Violation of national security laws.   

I'm sure I can go on, but I think you get the point.