This is called “capital flight”

Noah Smith: “ If the dollar weakens, America will be able to afford fewer imports, and U.S. exports will be cheaper. […] If we balance our trade by making ourselves poorer, that’s not a good thing.”

Also: Treasuries Suddenly Trade Like Risky Assets in Warning to Trump: “An auction of 30-year bonds on Thursday also saw investors snap up $22 billion of the debt, supporting the argument that Treasuries continue to be attractive even during the selloff.”