legislation_cosponsors: 119-hr-5309, S001145

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-5309	S001145	Rep. Schakowsky, Janice D. [D-IL-9]	D	IL	2025-09-30	0