legislation_cosponsors: 115-hconres-70, L000564

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-hconres-70	L000564	Rep. Lamborn, Doug [R-CO-5]	R	CO	2017-07-20	1