legislation_cosponsors: 100-sres-465, S000320

Cosponsors for tracked legislation. Distinguishes original cosponsors (signed on at introduction) from later additions. Linked to congress_members via bioguide_id.

This data as json

bill_id	bioguide_id	full_name	party	state	sponsorship_date	is_original_cosponsor
100-sres-465	S000320	Sen. Shelby, Richard C. [D-AL]	D	AL	1988-08-11	1