legislation_cosponsors: 119-s-2401, M001198

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-2401	M001198	Sen. Marshall, Roger [R-KS]	R	KS	2025-07-23	1