legislation_cosponsors: 119-s-3914, H001042

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-s-3914	H001042	Sen. Hirono, Mazie K. [D-HI]	D	HI	2026-02-25	1