legislation_cosponsors: 119-hr-1061, K000375

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-hr-1061	K000375	Rep. Keating, William R. [D-MA-9]	D	MA	2026-02-26	0