legislation_cosponsors: 98-hr-4567, B000410

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
98-hr-4567	B000410	Rep. Berman, Howard L. [D-CA-26]	D	CA	1984-04-10	0