Senator Robert Byrd is the sponsor.
Here is the info from Thomas.
Title: A bill to amend the Wild Free-Roaming Horses and Burros Act to improve the management and long-term health of wild free-roaming horses and burros, and for other purposes.
Sponsor: Sen Byrd, Robert C. [WV] (introduced 8/5/2009) Cosponsors (None)
Latest Major Action: 8/5/2009 Referred to Senate committee. Status: Read twice and referred to the Committee on Energy and Natural Resources.