A free and responsible press is one of the guarantors of open government, but even in the United States that is not always a certainty.
In May, there were revelations that the Justice Department had secretly seized records of phone lines used by Associated Press reporters. The seizure was part of an investigation into government leaks.
The First Amendment to the Constitution guarantees a free press, but this incident is an example of the kind of pressure that can be brought on reporters. Another form of pressure is the threat of imprisonment if reporters do not reveal the names of sources.