There are a few things that need to be pointed out about the investigation into Federal Reserve Chairman Jerome Powell.

First of all:

So exactly what are the charges:

They are listed in a letter from Representative Anna Paulina Luna to Attorney General Pam Bondi (source here):

The two laws Chairman Powell is accused of breaking are 18 U.S.C. § 1621 and 18 U.S.C. § 1001.