legislation_cosponsors: 105-s-687, 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
105-s-687	M001054	Sen. Moynihan, Daniel Patrick [D-NY]	D	NY	1997-05-06	0