legislation_cosponsors: 111-hres-385, H001042

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
111-hres-385	H001042	Rep. Hirono, Mazie K. [D-HI-2]	D	HI	2009-05-07	0