legislation_cosponsors: 113-sres-545, H001049

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
113-sres-545	H001049	Sen. Hagan, Kay R. [D-NC]	D	NC	2014-09-15	1