legislation_cosponsors: 119-s-3439, S001203

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-3439	S001203	Sen. Smith, Tina [D-MN]	D	MN	2025-12-11	1