legislation_cosponsors: 119-hr-5309, S001226

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-5309	S001226	Rep. Salinas, Andrea [D-OR-6]	D	OR	2026-01-12	0