legislation_cosponsors: 119-hconres-52, B001315

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-hconres-52	B001315	Rep. Budzinski, Nikki [D-IL-13]	D	IL	2025-09-26	1