U.S. Senator probes into Binance over alleged $1.7B Iran ties

U.S. Senator Richard Blumenthal has opened an investigation into Binance following reports that $1.7 billion was transferred to Iran-linked organizations. Binance denies the claims, but is the world's largest exchange in trouble again given sanctions violations in the past? CoinDesk's Jennifer Sanasie hosts "CoinDesk Daily."