legislation_cosponsors: 110-sres-656, 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
110-sres-656	K000305	Sen. Kohl, Herb [D-WI]	D	WI	2008-09-11	1