The Post and the New York Times were free to publish this material. It has consequences of course, but none of them were levied against the Washington Post or New York Times.
The US Government does not punish the press for receiving, discussing or talking about that sort of information. Instead, it goes after the leakers. Discussion, and freedom of speech is much respected.
If anything, your link is but one more example that supports my point.
If the best example of US Government censorship is Judith Miller, then my point remains very strong. No one in the US is stopping freedom of speech. At best, you can get arrested for failing to uphold a subpoena, which is a known fact anyway.
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Furthermore, despite the whole affair, not a single report of Spooks coming in to destroy computers, or otherwise try and stop the publication of those events. (As has been seen in the UK right now, with the whole Guardian thing going on).