legislation_cosponsors: 110-hconres-421, L000563

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-421	L000563	Rep. Lipinski, Daniel [D-IL-3]	D	IL	2008-09-18	1