legislation_cosponsors: 110-hr-6676, K000360

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-hr-6676	K000360	Rep. Kirk, Mark Steven [R-IL-10]	R	IL	2008-07-30	1