legislation_cosponsors: 119-hr-3723, B001291

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-3723	B001291	Rep. Babin, Brian [R-TX-36]	R	TX	2025-06-04	1