How did the Tax Cuts and Jobs Act encourage U.S.based MNCs to remit their foreign earnings back to the United States? By increasing the federal corporate income tax rate on all earnings generated by U.S.-based MNCs in foreign countries. By reducing the federal corporate income tax rate on all earnings generated by U.S.-based MNCS in foreign countries. By allowing U.S.-based MNCs a onetime repatriation of foreign earnings back to the United States at a higher tax rate. By imposing a territorial tax system that taxes all earnings generated by U.S.-based MNCs in foreign countries