legislation_cosponsors: 110-hconres-302, C000059

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-302	C000059	Rep. Calvert, Ken [R-CA-44]	R	CA	2008-03-10	0