legislation_cosponsors: 119-hres-1073, N000189

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-hres-1073	N000189	Rep. Newhouse, Dan [R-WA-4]	R	WA	2026-02-23	1