The US and UK have begun scrutinizing cryptocurrency transactions totaling over $20 billion that have passed through a Russian exchange, reports Bloomberg. It is noted that payments were processed through the Moscow-based cryptocurrency exchange Garantex using the Tether cryptocurrency, which is pegged to the dollar. The source states that these transfers occurred after Garantex was sanctioned by the US and UK for suspected involvement in financial crimes and illicit operations in Russia. “The Biden administration has been attempting to squeeze crypto exchanges like Garantex since the early da…