Summary

Owen J. Roberts Hoeper v. Tax Commission of Wisconsin…

We have no doubt that, because of the fundamental conceptions which underlie our system, any attempt by a state to measure the tax on one person's property or income by reference to the property or income of another is contrary to due process of law as guaranteed by the Fourteenth Amendment. That which is not in fact the taxpayer's income cannot be made such by calling it income.
Source: Wikisource

Owen J. Roberts Hoeper v. Tax Commission of Wisconsin…

So far as the Constitution of the United States is concerned, the Legislature has power to determine what the consequences of marriage shall be, and, as it may provide that the husband shall or shall not have certain rights in his wife's property and shall or shall not be liable for his wife's debts, it may enact that he shall be liable for taxes on an income that in every probability will make his life easier and help to pay his bills. Taxation may consider not only command over but actual enjoyment of the property taxed.
Source: Wikisource

Owen J. Roberts Hoeper v. Tax Commission of Wisconsin…

At common law the wife's property, owned at the date of marriage or in any manner acquired thereafter, is the property of her husband. Her earnings and income are his, he may dispose of them at will, and he is liable for her debts. Were the status of a married woman in Wisconsin that which she had at common law, the statutory attribution of her income to her husband for income tax would, no doubt, be justifiable.
Source: Wikisource

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