Copper futures eased to around $6.55 per pound on Monday, falling for a fourth straight session as the dollar strengthened amid growing expectations that the Federal Reserve will raise interest rates next month following hawkish remarks from Chair Kevin Warsh. A stronger dollar makes greenback-priced commodities such as copper more expensive for buyers using other currencies, weighing on near-term demand. There were also signs that the supply squeeze may be easing, with the premium for spot copper over three-month futures narrowing. Additionally, LME inventories have improved recently as metal deliveries increased. However, traders continued diverting copper shipments toward the US ahead of potential new import tariffs, tightening supplies in global markets. Mining disruptions in major producers Indonesia, Congo and Chile also added to concerns over supply.