legislation_cosponsors: 119-hr-7286, R000612

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-7286	R000612	Rep. Rose, John W. [R-TN-6]	R	TN	2026-01-30	1