(a) a party who is a natural person;
(b) an officer or employee of a party that is not a natural person, after being designated as the party’s representative by its attorney;
(c) a person whose presence a party shows to be essential to presenting the party’s claim or defense; or
(d) a person authorized by statute to be present.
US Supreme Court // ©
(As amended Mar. 2, 1987, eff. Oct. 1, 1987; Apr. 25, 1988, eff. Nov. 1, 1988; Pub. L. 100–690, title VII, § 7075(a), Nov. 18, 1988, 102 Stat. 4405; Apr. 24, 1998, eff. Dec. 1, 1998; Apr. 26, 2011, eff. Dec. 1, 2011.)






