Biden president times will create a inside demand of USA dollars.
It means rates will be slashed up a lot.
It means USA dollar on forex will Go higher.
As there will be less USA dollars.
Biden will make dollar strong.
But American economy will be weak
Everyone knows that Biden is the "Wall street candidate",so electing him will bring some sort of calmness and positive signals inside the financial markets and the US dollar might increase it's value in the short term.
However,I don't believe that Biden has the power to "create inside demand for US dollars" or "slash up the rates".This is the job of the Federal Reserve System,not the president.The US president can't command the Federal Reserve to conduct certain kind of financial and economic policy.