of their going to and from, and attendance on, Congress, except for
treason, felony, or breach of the peace.
ART. VI.--No State, without the consent of the United States, in
Congress assembled, shall send any embassy to, or receive any embassy
from, or enter into any conference, agreement, alliance, or treaty with
any king, prince, or state; nor shall any person holding any office of
profit or trust under the United States, or any of them, accept of any
present, emolument, office, or title of any kind whatever from any king,
prince, or foreign state; nor shall the United States, in Congress
assembled, or any of them, grant any title of nobility.