Theodore Roosevelt National Park Wild Horses Protection Act

This bill requires the Secretary of the Interior to maintain a genetically diverse herd of at least 150 wild horses in the South Unit of Theodore Roosevelt National Park. The Secretary must develop a management plan within 120 days of the bill's enactment, focused on cost-effective horse management that protects park resources. It prohibits removing horses from the park except to maintain genetic diversity, in emergencies, or to protect public health and safety. The Secretary must also annually monitor and publicly report on the herd's population, structure, and health.