legislation_cosponsors: 100-hconres-109, M000019

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
100-hconres-109	M000019	Rep. Mack, Connie, III [R-FL-13]	R	FL	1987-04-23	1