The monitoring committee of the House of Representatives, the lower house of the US parliament, is investigating Louis DeJoy, the boss of the USPS state postal service, The Washington Post reports.
The Democrats, who are in the majority in the House of Representatives, want DeJoy to be immediately suspended after allegations of campaign money fraud.
The Washington Post previously reported that DeJoy had asked his former employees for donations for friendly Republican politicians.
Employees who donated were subsequently reimbursed for that money in the form of bonuses. Such campaign finance practices are prohibited by federal law in the United States.
Chuck Schumer, Democrats in the Senate group chairman, already called on the North Carolina prosecutor on Monday to investigate DeJoy.
New Breed Logistics, DeJoy’s former company, is headquartered in that state. The practices DeJoy is alleged to have employed are also punishable under North Carolina law.