legislation_cosponsors: 112-s-1747, B001268

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
112-s-1747	B001268	Sen. Brown, Scott P. [R-MA]	R	MA	2011-12-01	0