Canada retaliates tariffs China imposes tariffs Federal Reserve and USD Financial Market Trends forex trading strategies Forex trading USD Global currency market Greenback latest news Greenback struggles Stock market vs USD Tariff war impact on USD Trade war US vs China US Dollar analysis today US Dollar crash 2025 US dollar decline US Dollar drops sharply US Dollar market news US Dollar Volatility US economy latest updates US tariffs effect on USD US vs China trade war USD forex market trends USD forex news today USD Index DXY update USD Index support levels USD price forecast USD technical analysis USD to fall further USD under pressure