The term 'MEMBER OF CONG.' is an abbreviation for a Member of Congress, which is a person who has been elected to serve in the United States Congress. The three crossword solutions for this term are SEN (3 letters), POL (3 letters), and REP (3 letters). SEN stands for Senator, which is a member of the United States Senate. POL stands for Politician, which is someone who is involved in politics. REP stands for Representative, which is a member of the United States House of Representatives.