legislation_cosponsors: 103-hconres-256, M000129

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
103-hconres-256	M000129	Rep. Margolies-Mezvinsky, Marjorie [D-PA-13]	D	PA	1994-08-02	0