legislation_cosponsors: 110-hr-1964, H001034

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-hr-1964	H001034	Rep. Honda, Michael M. [D-CA-15]	D	CA	2007-04-19	1