legislation_cosponsors: 99-hconres-359, S000477

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
99-hconres-359	S000477	Rep. Slattery, Jim [D-KS-2]	D	KS	1986-09-17	0