1. Short title This Act may be cited as the Stop Corporate Inversions Act of 2017 . 2. Modifications to rules relating to inverted corporations (a) In general Subsection (b) of section 7874 of the Internal Revenue Code of 1986 is amended to read as follows: (b) Inverted corporations treated as domestic corporations (1) In general Notwithstanding section 7701(a)(4), a foreign corporation shall be treated for purposes of this title as a domestic corporation if— (A) such corporation would be a surrogate foreign corporation if subsection (a)(2) were applied by substituting 80 percent for 60 percent , or (B) such corporation is an inverted domestic corporation. (2) Inverted domestic corporation For purposes of this subsection, a foreign corporation shall be treated as an inverted domestic corporation if, pursuant to a plan (or a series of related transactions)— (A) the entity completes after May 8, 2014, the direct or indirect acquisition of— (i) substantially all of the properties held directly or indirectly by a domestic corporation, or (ii) substantially all of the assets of, or substantially all of the properties constituting a trade or business of, a domestic partnership, and (B) after the acquisition, either— (i) more than 50 percent of the stock (by vote or value) of the entity is held— (I) in the case of an acquisition with respect to a domestic corporation, by former shareholders of the domestic corporation by reason of holding stock in the domestic corporation, or (II) in the case of an acquisition with respect to a domestic partnership, by former partners of the domestic partnership by reason of holding a capital or profits interest in the domestic partnership, or (ii) the management and control of the expanded affiliated group which includes the entity occurs, directly or indirectly, primarily within the United States, and such expanded affiliated group has significant domestic business activities. (3) Exception for corporations with substantial business activities in foreign country of organization A