legislation_cosponsors: 113-hr-3229, H001064

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
113-hr-3229	H001064	Rep. Heck, Denny [D-WA-10]	D	WA	2014-07-08	0