Salmon P. Chase,
License Tax Cases — Opinion of the Court
“ Congress cannot tax exports, and it must impose direct taxes by the rule of apportionment, and indirect taxes by the rule of uniformity. Thus limited, and thus only, it reaches every subject, and may be exercised at discretion. But, it reaches only existing subjects. Congress cannot authorize a trade or business within a State in order to tax it.If, therefore, the licenses under consideration must be regarded as giving authority to carry on the branches of business which they license, it might be difficult, if not impossible, to reconcile the granting of them with the Constitution. ”
