legislation_cosponsors: 115-sjres-13, M000355

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
115-sjres-13	M000355	Sen. McConnell, Mitch [R-KY]	R	KY	2017-01-30	1