legislation_cosponsors: 119-s-2977, K000394

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-s-2977	K000394	Sen. Kim, Andy [D-NJ]	D	NJ	2025-10-07	1