"Similarly, ending the use of Russian rocket engines remains a top priority for this committee. Department leaders have correctly drawn attention to Russia's growing development of military capabilities to threaten U.S. national security in space. And yet, the greatest risk in this regard is that Vladimir Putin continues to hold our national security space launch capability in the palm of his hand through the Department's continued dependence on Russian rocket engines. .. And yet, the Treasury Department remains unwilling to sanction Roscosmos, the Russian parent company of the manufacturer of the RD-180, which is controlled by two sanctioned cronies of Vladimir Putin."
McCain, James Trade Barbs Over RD-180 Engines, Space Policy Online
"[Secretary of the Air Force (SecAF) Deborah Lee] James insisted she does not know who makes money from RD-180 sales and the Treasury Department determined that purchasing them does not violate the sanctions. In her opening statement, she said the sooner an RD-180 prohibition comes into effect, the more disruptive it will be and the more it will cost -- $1.5 to $5 billion -- and none of those costs are included in the Air Force's FY2017 budget request."