He's the AG. This was a trick they pulled in the first term. You make a guy the "acting" head of the agency, and he does the job until the new guy gets appointed, and approved by the Senate.

So what happens if you name an "acting" head, and then never choose a final appointee? Nothing. Nothing happens. Your chosen guy remains the head of the agency, without ever being vetted or approved by the Senate.

Todd Flintstone is the new AG, for all ill tents and porpoises.

No, that's not correct. "Impeachment is a process by which a legislative body or other legally constituted tribunal initiates charges against a public official for misconduct."

https://www.britannica.com/topic/impeachment

Landau, Sidney; Brantley, Sheila; Davis, Samuel; Koenigsberg, Ruth, eds. (1997). Funk & Wagnall's Standard Desk Dictionary. Vol. 1 (1996 ed.). United States: Harper & Row, Publishers, Inc. p. 322. ISBN 978-0-308-10353-5. "1. To charge (a high public official) before a legally constituted tribunal with crime or misdemeanor in office. 2. To bring discredit upon the honesty or validity of."

Then they can skip impeachment and go straight to imprisonment.