delivered the opinion of the Court.
This is an appeal under § 237 (a) of the Judicial Code, 28 U. S. C. § 344 (a) from the judgment of the Wisconsin Supreme Court which sustained the constitutionality as construed and applied to appellant of § 201.18 of the Wisconsin Statutes, 1943.
Sec. 201.18 reads as follows:
“Reserves, basis for. (1) The unearned premium or reinsurance reserve for every insurance company when no other statutory provision is made therefor, shall be computed by the commissioner by setting up fifty per cent of the premiums received on all risks that have one year or less to run, and pro rata of all premiums on risks that have *156 more than one year to run. In the case of perpetual risks or policies, the whole amount of premium paid shall be set up as a reserve. Every such company shall show its reserve, computed upon this basis, as a liability in the annual statement required by section 201.50.
“(2) Where no other provision is made therefor by law, the reserves of any insurance company shall be calculated upon such basis, method and plan as shall fully provide for all liabilities, and any basis, method and plan fixed by the order of the commissioner shall be prima facie just, reasonable and proper.”
The insurance commissioner of Wisconsin refused appellant a license in 1942 and also in 1943 for failure to comply with that provision. Appellant accordingly brought suits to enjoin the commissioner from interfering with its business and to require him to issue it a license to do business in the State for the years in question. The facts may be briefly stated.
Appellant is an Illinois corporation doing business in many States. It started doing business in Wisconsin in 1939. It writes various forms of automobile insurance on the mutual plan. When it writes a policy for a new customer, it charges him a membership fee in addition to a premium. The membership fee is not returnable but entities the insured to insure one automobile so long as he remains a desirable risk and so long as the company continues to write such coverage. It is said that the membership fee gives a life option to the insured to purchase insurance at a saving of from twenty to thirty-five per cent of the usual cost. Appellant has contended that the membership fees are no part of the premiums, furnish no insurance protection, and merely reimburse it for the expense of obtaining the new business. Wisconsin took a different view. The commissioner refused renewal of appellant’s license for the years ending May 1, 1940, and
*157
May 1, 1941. Litigation followed which resulted in the decision of
Duel
v.
State Farm Mutual Automobile Ins. Co.,
Of the three constitutional questions argued here two were raised below. They are that the statute violates (1) the due process clause of the Fourteenth Amendment and (2) the full faith and credit provision of Art. IV, § 1. We think neither of the two- has merit.
I. So far as due process of law is concerned, this case is governed by the principles announced in
Osborn
v.
Ozlin,
Wisconsin has a legitimate concern with the financial soundness of companies writing insurance contracts with its citizens. The reserve which it requires under § 201.18 is designed to measure the entire future contingent liability on unexpired risks. That contingent liability is obviously relevant in any appraisal of the financial soundness and stability of the company. It is, to be *159 sure, a bookkeeping requirement. But it is more than that: It is one of Wisconsin’s measuring rods of financial stability and strength. Any financial statement required by Wisconsin or any other State would need reflect all assets and liabilities of the company in the interests of truth. Their inclusion does not mean that out-of-state activities are being regulated by Wisconsin. It only means that solvency of a multi-state business can hardly be determined on a single state basis. Accounting is no exact science. The due process clause certainly does not require uniformity in requirements for financial statements of companies doing a multi-state business. Each State must necessarily have leeway in providing its own accounting standards for companies doing business within its borders. If a state undertook to regulate out-of-state activities through such a requirement, different questions would be posed. But we fail to see that Wisconsin has done that here. We cannot say that the reserve required by Wisconsin has any purpose but the protection of its own citizens. Its adequacy or appropriateness as a standard for qualification to do business in Wisconsin is therefore a question for Wisconsin to determine.
II. Little need be said in reply to the contention that the Wisconsin statute as construed and applied violates the full faith and credit provision of the Constitution. Appellant’s argument comes down to this: Illinois, the State of incorporation, does not treat the membership fees as a part of the premiums. Therefore, Wisconsin may not do so. The result would be that no State could impose stricter financial standards for foreign corporations doing business within its borders -than were imposed by the State of incorporation. The full faith and credit provision requires no such result. This Court has recognized that “In the case of statutes, the extra-state effect of which Congress has not prescribed, where the policy of one
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state statute comes into conflict with that of another, the necessity of some accommodation of the conflicting interests of the two states” is imperative.
Alaska Packers Assn.
v.
Industrial Accident Commission,
III. Appellant’s remaining contention is that this Wisconsin statute as construed and applied violates the Commerce Clause of the Constitution. Art. I, § 8. This question was not raised below. It emerged after the jurisdictional statement was filed here on June 1,1944. For on June 5, 1944, we decided
United States
v.
South-Eastern Underwriters Assn.,
A customary procedure has been for the Court to vacate the judgment of the state court where there has been a supervening event since its rendition which alters the basis upon which the judgment rests, and to remand the case so that the court from which it came might reconsider the question in light of the changed circumstances.
Gulf, C. & S. F. R. Co.
v.
Dennis,
We are advised that appellant has pending in the Wisconsin courts another suit in respect to the license year commencing May 1, 1944. Wisconsin has the familiar rule that though the validity of the law in question might have been determined in an earlier suit, the prior judgment is not
res judicata
where the second suit is on a different cause of action in absence of evidence to show that the question was actually presented to the court and decided in the earlier litigation.
Wentworth
v.
Bocine County,
The Wisconsin statute, moreover, gives the court power to allow an amendment “at any stage of any action or special proceeding before or after judgment, in furtherance of justice and upon such terms as may be just” -provided that “the amended pleading states a cause of action arising out of the contract, transaction or occurrence or is connected with the subject of the action upon which the original pleading is based.” Wis. Stat. 1943, § 269.44. That power has been construed very liberally.
Kennedy
v.
Waugh,
We conclude that appellant is not foreclosed under Wisconsin procedure from obtaining a determination in the Wisconsin courts of the commerce clause question either in the present suits or in the other pending one. Accordingly we do not think it is necessary to vacate the judgment below in order that appellant may have an opportunity to obtain the ruling/
Affirmed.
I think that the judgment below should be vacated rather than affirmed and do not, therefore, reach the constitutional questions dealt with in the Court’s opinion. I doubt that the Wisconsin Supreme Court can open and re-examine a judgment after it is affirmed by this Court. As the Court recognizes, to vacate is the procedure that has been followed when similar situations have been presented heretofore.
