US press is by no means free. Look at Fox or CNN: they would show only things which are permitted/approved by the government.
This is not at all true. How do you think Edward Snowden was able to leak all of our NSA secrets? How do you think a number of government whistle-blowers that the Obama administration hates were able to leak their information?
they don't leak their information to Fox and CNN
Both fox news and CNN have reported heavily on the snowden leaks. Snowden has leaked the NSA secrets to the Washington Post likely because of it's previous work (likely the watergate scandal).
Both news services have been highly critical of the NSA spying programs