legislation_cosponsors: 99-s-1053, M001054

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-s-1053	M001054	Sen. Moynihan, Daniel Patrick [D-NY]	D	NY	1985-05-02	1