Can the Fed Really Increase Its Balance Sheet by Trillions of Dollars?

The unemployment rate may not soon fall to pre cove 19 levels, and the secular growth of the economy could remain unimpressive. Relations with china are likely to continue to be thorny, flaring up from time to time. If the dollar performs poorly, will it remain the world's reserve currency? Can the fed really increase its balance sheet by trillions of dollars? And the us? Run annual deficits in the trillions in 20 20 and in coming years, without negative consequences like a decline in the dollar's value?