Utah Code Ann. § 31A-3-403
(2) For the purposes of this part, the domicile of an alien insurer, other than insurers formed under the laws of Canada or a province thereof, is the state where the insurer's principal place of business is located in the United States, except that alien insurers may designate in a writing filed with the commissioner at time of admission to Utah or by January 1, 1987, whichever date is later, any one of the following states as the alien insurer's state of domicile:
Enacted by Chapter 242, 1985 General Session