legislation_cosponsors: 117-sres-211, L000575

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
117-sres-211	L000575	Sen. Lankford, James [R-OK]	R	OK	2021-05-12	1