legislation_cosponsors: 101-sres-326, H000445

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
101-sres-326	H000445	Sen. Heflin, Howell [D-AL]	D	AL	1990-09-20	1