Relating to the state law enforcement authority of federal National Park Service law enforcement officers.

HB 1866 clarifies that federal National Park Service (NPS) law enforcement officers are not considered Texas peace officers but retain specific enforcement powers within Texas national parks and recreation areas. The bill grants NPS officers the authority to arrest, search, and seize for state law violations committed in these parks, execute Texas-issued warrants there, and use powers from Texas Health and Safety Codes within park boundaries. It directly affects NPS officers working in Texas national parks (like Big Bend or Guadalupe Mountains) by defining their jurisdiction without making them state law enforcement personnel. The law took effect immediately upon the governor's signature on June 20, 2025.