legislation_cosponsors: 101-hr-5481, R000543

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-hr-5481	R000543	Rep. Russo, Martin A. [D-IL-3]	D	IL	1990-08-03	1