HELENA, Mont. -

Homeland security officials are warning Montana Gov. Steve Bullock that the state may not get any more time to comply with federal driver's license rules meant to prevent terrorism and identity theft.
   
If Montana is found to be out of compliance with the Real ID Act of 2005, then state-issued driver's licenses alone won't be accepted for admission to most federal facilities and, starting in 2018, for air travel.
   
Bullock wrote Department of Homeland Security Secretary Jeh Johnson a letter Tuesday urging him to suspend implementation of the Real ID law and accept Montana licenses as secure forms of identification.
   
Montana and several other states oppose requirements in the law that include storing images of documents that driver's license applicants present as proof of their identity, such as birth certificates.