49 USC 70108 - Prohibition, suspension, and end of launches, operation of launch sites and reentry sites, and reentries

(a) General Authority.— 
The Secretary of Transportation may prohibit, suspend, or end immediately the launch of a launch vehicle or the operation of a launch site or reentry site, or reentry of a reentry vehicle, licensed under this chapter if the Secretary decides the launch or operation or reentry is detrimental to the public health and safety, the safety of property, or a national security or foreign policy interest of the United States.
(b) Effective Periods of Orders.— 
An order under this section takes effect immediately and remains in effect during a review under section 70110 of this title.