legislation_cosponsors: 110-hr-4286, C001060

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-hr-4286	C001060	Rep. Carnahan, Russ [D-MO-3]	D	MO	2007-12-05	1