I'm cursed with a memory for politics. These days I'm remembering the big scandal in the Clinton administration over allegations that Chinese money flowed into the the Clinton and Gore campaigns. It seems to me relevant in today's investigations over possible Russian and other country contributions (both financial and other) to the Trump campaign. To some extent, the roles are reversed: Republicans then viewed with alarm, Democrats minimized. The evidence that money originated in China was sufficient to cause some refunds and convict some people.
To a lesser extent the Filegate controversy parallels an issue today: how much separation should there be between the DOJ, specifically the FBI, and the White House.