legislation_cosponsors: 111-hconres-288, L000562

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
111-hconres-288	L000562	Rep. Lynch, Stephen F. [D-MA-9]	D	MA	2010-06-14	1