The Federal Reserve System of the United States, apparently, still studies methods of improvement of payment service providers of the country for the internal and global purposes, the decision on use of this or that system is not made yet.

Let's add, recently senator of Democratic Party of the USA Mark Warner suggested that if tendencies of growth of cumulative market value of the leading cryptocurrencies, including Ripple, proceed, then by 2020 it will exceed $20 trillion that to approximately equally public debt of the USA.