legislation_cosponsors: 110-sres-651, O000167

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
110-sres-651	O000167	Sen. Obama, Barack [D-IL]	D	IL	2008-08-01	1