legislation_cosponsors: 119-hr-6709, O000019

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-6709	O000019	Rep. Obernolte, Jay [R-CA-23]	R	CA	2025-12-15	1