legislation_cosponsors: 99-hr-4553, B000213

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
99-hr-4553	B000213	Rep. Barton, Joe [R-TX-6]	R	TX	1986-04-10	1