Estate tax in the United States subject to a different regime for estate tax than U.S. citizens and residents. The estate tax is imposed only on the part of the gross non-resident alien's estate that at the time of death is situated in the United States. These rules may be ameliorated by an estate tax treaty. The U.S. does not maintain as many estate tax treaties as income tax treaties, but there are estate tax treaties in place with many of the major European countries, Australia, and Japan. U.S. real estate owned by a non-resident alien through a foreign corporation is not included in a non-resident
Income tax in the United States on saved income is itself taxed. To the extent that this is considered unjust, it may be remedied in a variety of ways, e.g. excluding investment income from taxable income, making investments deductible and therefore only taxing them when gains are realized, or replacing the income tax by other forms of tax, such as a sales tax. Some economists believe income taxation offers the federal government a technique to diminish the power of the states, because the federal government is then able to distribute funding to states with conditions attached, often giving the states no choice but to submit to