legislation_cosponsors: 119-s-1415, M001243

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-1415	M001243	Sen. McCormick, David [R-PA]	R	PA	2025-04-10	1