Dollar edges higher before Powell;  drops ,REP,CEN,ECO,EU,FRX,GEN,INFL,INTAG,MCE,PLCY,POL,UK,GB,CEEU,WEU,EASIA,AMERS,US,EUROP,CA,AU,EZC,NAMER,ASXPAC,AUNZ,EZ,ASIA,JP,TOPNWS,FIN @Reuters https://t.co/VrJGmuGTNQ https://t.co/66Ven1lt06