legislation_cosponsors: 98-sjres-49, J000013

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
98-sjres-49	J000013	Sen. Jackson, Henry M. [D-WA]	D	WA	1983-03-03	1