legislation_cosponsors: 116-hr-8959, A000378

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
116-hr-8959	A000378	Rep. Axne, Cynthia [D-IA-3]	D	IA	2020-12-14	1