Oliver Wendell Holmes, Jr., St. Louis Cotton Compress Company v…
“ Each is a prohibition to the extent of the payment required. The Arkansas tax manifests no less plainly than the Louisiana fine a purpose to discourage insuring in companies that do not pay tribute to the State. This case is stronger than that of Allgeyer in that here no act was done within the State, whereas there a letter constituting a step in the contract was posted within the jurisdiction. It is true that the State may regulate the activities of foreign corporations within the State but it cannot regulate or interfere with what they do outside. ”
