legislation_cosponsors: 112-hr-6587, R000487

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-6587	R000487	Rep. Royce, Edward R. [R-CA-40]	R	CA	2012-11-27	0