legislation_cosponsors: 112-hr-6491, T000238

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	T000238	Rep. Thornberry, Mac [R-TX-13]	R	TX	2012-09-21	1