legislation_cosponsors: 112-hr-4306, G000021

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-4306	G000021	Rep. Gallegly, Elton [R-CA-24]	R	CA	2012-11-15	0