legislation_cosponsors: 100-sres-111, H000456

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-sres-111	H000456	Sen. Heinz, John [R-PA]	R	PA	1987-02-19	1