legislation_cosponsors: 114-sconres-56, C000174

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-sconres-56	C000174	Sen. Carper, Thomas R. [D-DE]	D	DE	2016-11-29	1