legislation_cosponsors: 119-hr-7531, B001292

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-7531	B001292	Rep. Beyer, Donald S. [D-VA-8]	D	VA	2026-02-12	1