At the moment it's been confirmed by the director of the F.B.I that Trump and his people are being investigated closely for foreign ties with Russia, etc. (see below).
F.B.I. Is Investigating Trump’s Russia Ties, Comey Confirms
Mr. Comey said the F.B.I. was “investigating the nature of any links between individuals associated with the Trump campaign and the Russian government, and whether there was any coordination between the campaign and Russia’s efforts.”
Counterintelligence investigations are among the F.B.I.’s most difficult and time-consuming cases, meaning an investigation could hang over the Trump administration for years even though such inquiries rarely lead to criminal charges.
American intelligence agencies concluded in January that President Vladimir V. Putin of Russia personally ordered a covert effort to hurt Hillary Clinton’s chances and aid Mr. Trump. That included hacking political targets, including the Democratic National Committee, and releasing embarrassing emails through the website WikiLeaks.
This happened with Trump so tell me. . .
- Have there ever been any other presidential campaigns (or associated individuals) that consequently held the offices which they ran for that have been investigated by the F.B.I for ties with foreign government(s)—specifically this occurring against the POTUS or his associated people after being elected and inaugurated?