intend to preclude a franchise tax upon other, unmentioned corporate entities. Unless otherwise provided by law, a franchise tax is imposed upon all domestic and foreign corporations doing business in Texas. See Tex.Tax.-Gen.Ann. arts. 12.01 to 12.22 (Vernon 1969 & Supp.1978-1979). The granting of the privilege to transact business in this state confers economic benefits, including the opportunity to realize gross income and the right to invoke the protection of local law. The Texas franchise tax is a tax on the value of this privilege. General Dynamics Corp. v. Bullock, 547 S.W.2d 255, 257-58 (Tex.1976); Texaco, Inc. v. Calvert, 526 S.W.2d 630, 633 (Tex.Civ.App.—Austin 1975, writ ref’d n.r. e.); see Ford Motor Co. v. Beauchamp, 308 U.S. 331, 334-35, 60 S.Ct. 273, 84 L.Ed. 304 (1939) (<HOLDING>). The formula employed to compute a
holding that litigating franchise dispute in michigan does not require that michigan law govern dispute as michigan franchise investment law does not expressly void choice of law provisions in franchise agreement recognizing this texas rule holding that where the entity was incorporated in texas and the shareholders reside in texas and the bankruptcy case is pending in texas texas law  not arizona law  should be applied holding texas franchise tax constitutional holding texas poll tax unconstitutional