An Internal Revenue Service supervisor has claimed the Biden administration is handling a criminal investigation into Hunter Biden improperly, according to a letter sent to Congress. The letter accuses the administration of ignoring “clear conflicts of interest” and expressed concerns about “preferential treatment.” The supervisor, a career IRS Criminal Supervisory Special Agent, has been overseeing an “ongoing and sensitive investigation of a high-profile, controversial subject since early 2020," investigation reports suggest that the subject of the investigation is Hunter Biden. The supervisor’s lawyer provided a copy of the letter to lawmakers, calling on them to provide their client with whistleblower protections. In a statement, the lawyer wrote that the agency employee is “offering to provide you with information necessary to exercise your constitutional oversight function and wishes to make the disclosures in a non-partisan manner.” The allegations have yet to be investigated but are expected to raise further questions about Hunter Biden’s potential foreign business dealings dating to when his father was vice president.