legislation_cosponsors: 112-hr-6591, W000800

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-6591	W000800	Rep. Welch, Peter [D-VT-At Large]	D	VT	2012-11-15	1