legislation_cosponsors: 119-s-3627, C001075

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-3627	C001075	Sen. Cassidy, Bill [R-LA]	R	LA	2026-01-13	1