enabling act 
noun
A statute empowering a person or body to take certain action, especially to make regulations, rules, or orders.The original enabling act required leases to conduct commerce but none of these early entrepreneurs possessed such leases....
- So, why not just bring in an enabling act and give him the powers of a dictator?
- Anti-wolf groups drew attention to Yellowstone's enabling act, highlighting the preserve as a public recreation area rather than a refuge for ‘dangerous’ beasts.