legislation_cosponsors: 110-hconres-249, U000038

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-249	U000038	Rep. Udall, Mark [D-CO-2]	D	CO	2007-12-19	0