The US dollar index fell to its lowest level in two-and-a-half years on Monday, with the greenback battered across the board by improving risk sentiment and heightened expectations for Federal Reserve easing at its next monetary policy meeting. We noted last week that the looser virus restrictions in the US may lead to a modest outperformance of the US economy relative to its European continent. While that remains the case, investors are now focusing on the impact that these more sporadic measures are having on the rate of virus infection in the US. The seven-day moving average of cases rose to just below the 180k level last week and there are concerns that cases could hit fresh highs in the coming days given the bump expected following the Thanksgiving holiday.With cases rising and the economy under increased pressure, there is now growing speculation that the Fed could inject more stimulus into the US when it next meets on 16th December. We should get a much better idea as to whether that will be the case when FOMC chair Jerome Powell speaks in front of Congress at his semi-annual testimony today and tomorrow. This will be very closely watched by investors so heightened volatility around his appearance is to be expected.