con·gres·sion·al 
(kən-grĕshə-nəl, kəng-)
(kən-grĕshə-nəl, kəng-)adj.
1. Of or relating to a congress: a congressional convention.
2. Relating to or working in the office of a member or members of a congress: a congressional aide.
n.
A member of a congress.
con·gression·al·ly adv.