President Trump has issued an Executive Order banning U.S.-linked companies and investors from using Venezuelan issued crypto-currencies including the “Petro”. While transfers within the currency’s blockchain can’t be traced, injections of dollars into and out of the system could be. The prospect of sanctions has long been a part of Trump administration policy. Cutting oil imports from Venezuela remains the more effective route despite the potential sale to other countries and knock-on effect on food purchases. U.S. oil imports from Venezuela have already been falling though due to under...