Can an American hold a British title?
Title of Nobility Clause
The Title of Nobility Clause is a provision in Article I, Section 9, Clause 8 of the United States Constitution,[1] that prohibits the federal government from granting titles of nobility, and restricts members of the government from receiving gifts, emoluments, offices or titles from foreign states and monarchies without the consent of the United States Congress. Also known as the Emoluments Clause, it was designed to shield the republican character of the United States against so-called "corrupting foreign influences." This shield is reinforced by the corresponding prohibition on state titles of nobility in Article I, Section 10, and more generally by the Republican Guarantee Clause in Article IV, Section 4.[2]
Doctor (title)
Doctor is commonly used in the United Kingdom as the title for a person who has received a doctoral degree or, as courtesy title, for a qualified medical practitioner or dentist who does not have a doctorate. There are no restrictions on the use of the title "Doctor" in the United Kingdom, except where, in commercial advertising, it might imply that the user holds a general medical qualification. The UK government allows medical doctors and holders of doctorates to have the title recorded on the observations page of their UK passport. The lack of legal restrictions was confirmed in Parliament in 1996 by health minister Gerald Malone, who noted that the title doctor had never been restricted by law to either medical practitioners or those with doctoral degrees in the UK, although the titles "physician, doctor of medicine, licentiate in medicine and surgery, bachelor of medicine, surgeon, general practitioner and apothecary" were protected.