legislation_cosponsors: 119-s-1158, L000575

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-1158	L000575	Sen. Lankford, James [R-OK]	R	OK	2025-03-26	1