Can Democracy Endure Where the Cyber Things Are?

Imagine if a U.S. president determined that an insurrection or a threat of war existed. Would President Lincoln's actions in blockading Confederate ports enable a modern president to suppress insurrection by "blockading" portions of U.S. Internet connections? Assuming the executive determined a denial-of-access necessary for national security purposes — perhaps to prevent domestic adversaries from relaying communications to fellow in-state conspirators or to impede their ability to communicate with an affiliated foreign adversary — is such government action lawful?...

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