legislation_cosponsors: 111-hres-415, P000258

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-hres-415	P000258	Rep. Peterson, Collin C. [D-MN-7]	D	MN	2009-05-12	0