legislation_cosponsors: 113-hr-1998, T000465

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-1998	T000465	Rep. Tsongas, Niki [D-MA-3]	D	MA	2013-07-16	0