legislation_cosponsors: 115-hres-587, K000389

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-hres-587	K000389	Rep. Khanna, Ro [D-CA-17]	D	CA	2017-12-19	0