legislation_cosponsors: 113-sres-449, R000122

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-449	R000122	Sen. Reed, Jack [D-RI]	D	RI	2014-05-15	1