legislation_cosponsors: 114-sres-641, T000476

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
114-sres-641	T000476	Sen. Tillis, Thomas [R-NC]	R	NC	2016-12-10	1