(1) An alien insurer shall not be authorized to transact insurance in this state unless it maintains within the United States assets in amount not less than its outstanding liabilities arising out of its insurance transactions in the United States, nor unless it maintains a trust deposit in an amount not less than the required reserves under its policies resulting from such transactions (after deducting, in the case of a life insurer, the amount of outstanding policy loans on such policies) plus assets equal to the larger of the following sums:

(a) The largest amount of deposit required under this title to be made in this state by any type of domestic insurer transacting like kinds of insurance; or

(b) Two hundred thousand dollars.

(2) The trust deposit shall be for the security of all policyholders or policyholders and obligees of the insurer in the United States. It shall not be subject to diminution below the amount currently determined in accordance with subsection (1) of this section so long as the insurer has outstanding any liabilities arising out of its business transacted in the United States.

(3) The trust deposit shall be maintained with public depositaries or trust institutions within the United States approved by the commissioner.