legislation_cosponsors: 119-hr-1778, M001230

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-1778	M001230	Rep. Mackenzie, Ryan [R-PA-7]	R	PA	2025-03-18	0