legislation_cosponsors: 112-hr-4128, R000583

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
112-hr-4128	R000583	Rep. Rooney, Thomas J. [R-FL-16]	R	FL	2012-03-01	1