The so-called Shield bill, which was recently introduced in both houses of Congress in response to the WikiLeaks disclosures, would amend the Espionage Act of 1917 to make it a crime for any person knowingly and willfully to disseminate, “in any manner prejudicial to the safety or interest of the United States,” any classified information “concerning the human intelligence activities of the United States.”

Although this proposed law may be constitutional as applied to government employees who unlawfully leak such material to people who are unauthorized to receive it, it would plainly violate the First Amendment to punish anyone who might publish or otherwise circulate the information after it has been leaked. At the very least, the act must be expressly limited to situations in which the spread of the classified information poses a clear and imminent danger of grave harm to the nation.

Read more at The New York Times