legislation_cosponsors: 112-hr-3572, H001063

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
112-hr-3572	H001063	Rep. Hahn, Janice [D-CA-36]	D	CA	2012-02-15	0