legislation_cosponsors: 119-s-3941, J000312

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-3941	J000312	Sen. Justice, James C. [R-WV]	R	WV	2026-02-26	1