legislation_cosponsors: 100-sjres-99, M000635

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-sjres-99	M000635	Sen. Melcher, John [D-MT]	D	MT	1987-04-10	0