legislation_cosponsors: 99-sres-134, K000105

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
99-sres-134	K000105	Sen. Kennedy, Edward M. [D-MA]	D	MA	1985-04-18	1