He can still be required to testify, no? If he broke the law, he’s not suddenly exempted from it.
Miller already lied to congress when asked directly about targeting conservative groups. He worked for Billary, and has quite a history there as well. Subpoena time. How about perjury for starters?
How about some nice in yer face jail time on a shingle as an appetizer? It’s the special, this week only.