So, impeach him
Impeachment has to begin in the House of Representatives. As you know that comes under the purview of House Speaker John Boehner, Majority Leader Eric Cantor and Majority Whip Kevin McCarthy. They have the power, authority, duty and responsibility to open Hearings on the Articles of Impeachment.
If these individuals are satisfied with the non-stop Abuses of Power, Circumventing of Law and other Acts that are detrimental and deleterious to the Safety and Security of the United States of American and her Citizens, then these Hearings will not be forthcoming.
If We The People are going to be viewed as being accepting and tolerant of these people being Derelict In Their Duty, they will come through the coming Primary Elections to remain in Office.
The Senate cannot begin this process.