legislation_cosponsors: 115-sres-137, F000463

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
115-sres-137	F000463	Sen. Fischer, Deb [R-NE]	R	NE	2017-04-24	1