legislation_cosponsors: 112-hr-15, M000725

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-15	M000725	Rep. Miller, George [D-CA-7]	D	CA	2012-07-30	1