The US charged him with espionage, and he remains in Russia, where he has received permanent residency. Russia has rejected US efforts to extradite him. One famous case of né-extradition Per Russia is that of Edward Snowden who was able to find asylum there. The legal implications of né-extradition policies https://socialwoot.com/story20109549/non-nota-dettagli-circa-proven-english-speaking-attorney-solutions