legislation_cosponsors: 104-hr-641, L000090

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
104-hr-641	L000090	Rep. Lantos, Tom [D-CA-12]	D	CA	1995-03-30	0