Agostino Abbatiello was one of 14 people arrested in the alleged drug ring.
Makary was scheduled to testify on Capitol Hill on Wednesday.
Florida investigators arrested rapper Kodak Black Wednesday alleging that he was trafficking in MDMA last year.
The Matthew Perry Foundation works to destigmatize addiction and aid in recovery from substance abuse.
The pop star was charged with a single misdemeanor count of driving under the combined influence of alcohol and at least one drug.
Four Bergen County residents are facing charges for their alleged roles in a major drug trafficking operation that moved large quantities of drugs between New Jersey and New York.