legislation_cosponsors: 119-hr-2021, M001226

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
119-hr-2021	M001226	Rep. Menendez, Robert [D-NJ-8]	D	NJ	2025-03-10	1