Falsification of FISA warrants by forgery or by false declarations or false oath; perjury and quite likely possession of false papers to defraud the United States through counterfeit or falsified documents of any kind.
RICO conspiracy to defraud American citizens of due process 18 U.S. Code § 242.
Misuse of campaign and government funds including, embezzlement, extortion and bribery.
That's just off the top of my head
Murder and subsequent coverup of Seth Rich.