Recognition Under English/United States Common Law
In the United States recognition of the "Goodwill Ambassador Title" is often very important, with the media (who are often fooled), with local government, corporations (sometimes duped) and under the strict state and federal scrutiny is most often rejected when unknown. To be recognized in the United States legally as a Goodwill Ambassador with the Goodwill Ambassador Commission is the same as having an international document apostilled.
Legal titles of foreign visitors that can be recognized as "Honorable" in the United States are few; under Colonial Common Law which was adopted in May of 1776 as the "body of law" that would continue has survived the test of many years. Under the common law the titles of nobility from foreign states were abolished as having any legitimacy or standing, but it did not preclude titles of merit or honor. So while being a Duke, Baron, Lord, or Prince were no longer recognized after the Colonial Legal Transition, the titles of merit and recognition prenominal and postnominal like Colonel, Lt. Colonel, Captain, Judge, Professor, Doctor, Planter, Boss, Master (School Master), Reverend, Ambassador, and a few others are often taken for life.
Since 1776 there has been much written about "titles" by the end of the 19th century most of the debates about titles had been settled and mostly remained; as it seems during the 19th century a legitimate honorary title meant a person had an outstanding character.
The United States Constitution Article 1 Section 9 Clause 8 - Constitution Annotated: 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.