legislation_cosponsors: 98-sjres-98, M000257

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-98	M000257	Sen. Mattingly, Mack [R-GA]	R	GA	1983-05-11	1