legislation_cosponsors: 119-s-3725, K000367

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-3725	K000367	Sen. Klobuchar, Amy [D-MN]	D	MN	2026-01-29	1