Summary

George Sutherland Colgate v. Harvey — Opinion of the Court

The fact that we have since decided, and should now hold, that the Nevada act was in violation of the commerce clause, in no way detracts from the view that it also violates the privileges and immunities clause; but simply demonstrates that the same act of state legislation may contravene more than one provision of the Federal Constitution.
The right of a citizen of the United States to engage in business, to transact any lawful business, or to make a lawful loan of money in any state other than that in which the citizen resides is a privilege equally attributable to his national citizenship.
Source: Wikisource

George Sutherland Colgate v. Harvey — Opinion of the Court

And it well cannot be doubted that legislation of one state denying the privilege or taxing the transaction when it occurs in another state, while leaving the transaction wholly free from taxation when it takes place in the former state, would abridge that privilege of citizenship. It would be no answer to say that thereby the former state was building up her local insurance companies and adding to the wealth of the state. Nor is it any answer to say that the citizen may resort to other clauses of the Fourteenth Amendment which will afford protection.
Source: Wikisource

George Sutherland Colgate v. Harvey — Opinion of the Court

All taxes must of necessity be levied by general rules capable of practical administration. In drawing the line between the taxed and the untaxed, the equal protection clause does not command the impossible or the impractical. Unless the line which the state draws is so wide of the mark as palpably to have no reasonable relation to the legitimate end, it is not for the judicial power to reject it and say that another must be substituted.
Source: Wikisource

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