legislation_cosponsors: 112-hr-6491, W000804

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-6491	W000804	Rep. Wittman, Robert J. [R-VA-1]	R	VA	2012-09-21	1