Interesting approach of focusing on The Post instead of...I dunno, Daniel Ellsberg, which is way more fascinating. But they probably just couldn't say no to a script to be starred by Streep. The ending is a good closure but may be confusing for those unfamiliar with Watergate.
“The founding fathers gave the free press the protection it must have to fulfill its essential role in our democracy. The press was to serve the governed, not the governors.”