But leaving aside the question of whether it would be desirable, the main question I want to focus on is: is it feasible? The answer is, it depends on how it is done. If the mechanism for achieving equal interest rates with the United States was that we adopt the US dollar, or establish a fixed exchange rate, then it should be technically achievable.
Meanwhile, borrowers adjust their demand for funds based on their changing assessment of the risks and expected returns of their investment projects. When desired saving rises or investment  -9demand falls, then long-term interest rates will decline. Today’s very low level of longterm rates suggests that both of these factors are at play.