legislation_cosponsors: 100-sconres-56, D000030

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-sconres-56	D000030	Sen. Danforth, John C. [R-MO]	R	MO	1987-05-01	1