Here's a link to the McCarran act in wikipedia. Says it has been mostly repealed...
http://en.wikipedia.org/wiki/McCarra...l_Security_Act
Here's a link to Alien and Sedition act which also has expired
http://en.wikipedia.org/wiki/Alien_and_Sedition_Acts
I'm seeing no specific mention of banning books in those (admittedly brief) synopses.
Now the Espionage act entry says:
"The Espionage Act of 1917, 18 USC § 792 et seq.,[1] is a United States federal law passed on June 15, 1917, shortly after the U.S. entry into World War I.
It prohibited any attempt to interfere with military operations, to support America's enemies during wartime, to promote insubordination in the military, or to interfere with military recruitment. In 1919, the U.S. Supreme Court unanimously ruled in Schenck v. United States that the act did not violate the freedom of speech of those convicted under its provisions."
It is unclear if or what books (or a count of them) were banned.
Guess I'm still searching for evidence/data that says the U.S.A. Government is the #1 banner of books as was claimed.

Interesting note in that last one:
"Julian Assange
The Washington Post reports that sources have said that federal authorities are considering prosecuting WikiLeaks founder Julian Assange under the Act, though the previous day Attorney General Eric H. Holder Jr. "did not indicate that Assange is being investigated for possible violations of the Espionage Act."[34]"