No, Congress does not have the power to grant titles of nobility. The United States Constitution specifically prohibits the granting of titles of nobility in Article I, Section 9, Clause 8. This clause states that "No Title of Nobility shall be granted by the United States: And no Person holding any Office of Profit or Trust under them, shall, without the Consent of the Congress, accept of any present, Emolument, Office, or Title, of any kind whatever, from any King, Prince, or foreign State."
