legislation_cosponsors: 112-hr-3574, B001276

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-3574	B001276	Rep. Buerkle, Ann Marie [R-NY-25]	R	NY	2011-12-06	1