legislation_cosponsors: 110-hconres-161, B001251

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
110-hconres-161	B001251	Rep. Butterfield, G. K. [D-NC-1]	D	NC	2007-05-24	1