legislation_cosponsors: 116-hres-489, G000574

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
116-hres-489	G000574	Rep. Gallego, Ruben [D-AZ-7]	D	AZ	2019-07-16	0