legislation_cosponsors: 119-hr-2581, B001295

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-2581	B001295	Rep. Bost, Mike [R-IL-12]	R	IL	2025-04-02	0