Hugo Black,
International Harvester Company v…
“ And here, it clearly appears from the background of Ohio's tax legislation that the whole purpose of the State formula was to arrive, without undue complication, at a fair conclusion as to what was the value of the intrastate business for which its franchise was granted. In October, 1924 this Court struck down Ohio's then corporation franchise tax on the ground that it did not make an apportionment between local and interstate business so as to confine its tax to local business only. The tax was also held to be in violation of the Equal Protection clause. ”
