legislation_cosponsors: 109-sconres-49, K000305

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
109-sconres-49	K000305	Sen. Kohl, Herb [D-WI]	D	WI	2005-07-29	1