Just spitballing here: RICO Statute (18 U.S. Code § 1961, et seq.)
As used in this chapter—
(1) “racketeering activity” means...
(B) any act which is indictable under any of the following provisions of title 18, United States Code:
section 1341 (relating to mail fraud),
section 1343 (relating to wire fraud),
section 1344 (relating to financial institution fraud),
section 1510 (relating to obstruction of criminal investigations),
section 1511 (relating to the obstruction of State or local law enforcement),
section 1512 (relating to tampering with a witness, victim, or an informant),
section 1513 (relating to retaliating against a witness, victim, or an informant),
section 1956 (relating to the laundering of monetary instruments),
section 1957 (relating to engaging in monetary transactions in property derived from specified unlawful activity),
section 1960 (relating to illegal money transmitters),
Just curious, think any of these things might relate to Donald J. Trump, the Trump Organization, or the Trump Foundation? To other members of his family? To activities Paul Manafort has been involved in? Asking for a "friend".