central bank news Currency exchange rates dollar price movement dxy analysis Fed Chair Powell Federal Reserve Financial News forex market Forex Strategy Forex Trading Forex Trends global markets Inflation Impact Interest rates Investor sentiment market analysis Monetary policy stock market today trump tariff news us china trade us dollar index US Economic Outlook US economy US tariffs US Treasury Yields USD forecast USD Strength usdx resistance usdx support US Dollar Holds Steady Above 108.00 as Markets Await Fed Chair Powell’s Testimony