PG

It must have been pretty shocking in the 1970's to discover that the entire presidential administration was jam-packed with corruption. Today, we hardly bat an eyelash when a politician has an affair, embezzles money, or take Borg drones to sleazy sex clubs. (Source)

But aside from a few instances of saucy language, this PG-rated film is tame by modern standards. So is the Washington Post itself:

BRADLEE: This is a family paper.

It's appropriate for almost all ages.