Columbia subject headings:
Ethnicity--Congresses.
Leadership--Congresses.
Minorities--United States--Congresses.
Harvard subject headings:
Ethnicity--United States--Congresses.
Leadership--Congresses
Minorities--United States--Congresses
Princeton subject headings:
Ethnicity--United States--Congresses.
Leadership--Congresses.
Minorities--United States--Congresses.