Canadian brothers Tim and Alex Foley discovered that their parents were spies for the Russian SVR when the FBI raided their house on 27 June 2010:
[T]he FBI had not made a mistake, and the truth was so outlandish, it defied comprehension. Not only were their parents indeed Russian spies, they were Russians. The man and woman the boys knew as Mom and Dad really were their parents, but their names were not Donald Heathfield and Tracey Foley. Those were Canadians who had died long ago, as children; their identities had been stolen and adopted by the boys’ parents.
Their real names were Andrei Bezrukov and Elena Vavilova. They were both born in the Soviet Union, had undergone training in the KGB and been dispatched abroad as part of a Soviet programme of deep-cover secret agents, known in Russia as the “illegals”. After a slow-burning career building up an ordinary North American background, the pair were now active agents for the SVR, the foreign spy agency of modern Russia and a successor to the KGB. They, along with eight other agents, had been betrayed by a Russian spy who had defected to the Americans.
The Guardian also addresses the bear in the room: "If Tim and Alex’s story sounds eerily familiar to fans of The Americans, the television drama about a KGB couple living in the US with their two children, that’s because it’s partly based on them."