Final answer:
Free-floating exchange rates impact U.S. exports and imports, influence policymakers' decisions in managing the economy, and affect U.S. debt and deficit costs.
Step-by-step explanation:
The free-floating exchange rate system can significantly impact U.S. importers and exporters. A stronger U.S. dollar makes U.S. goods more expensive overseas, thus potentially decreasing U.S. exports and benefiting foreign exporters selling in the U.S as their goods become relatively cheaper. Conversely, a weaker U.S. dollar may boost U.S. exports by making them cheaper abroad but make imports more expensive, which could hurt U.S. importers.
For U.S. economic policymakers, managing the macroeconomy under a free-floating exchange rate system can be challenging. The central bank must monitor the impact of exchange rates on aggregate demand, as changes can affect both imports and exports. Additionally, exchange rate fluctuations may cause difficulties for financial institutions, potentially leading to unsustainable international capital flows.
When it comes to the U.S. debt and deficit, exchange rate fluctuations can affect the cost of servicing foreign-held debt. A stronger dollar can reduce the local currency cost of paying off debt denominated in foreign currencies. However, this might also result in foreign investors seeking higher interests to offset exchange rate risks, which could enlarge the deficit. As for national borrowing, whether the marginal benefit exceeds the marginal cost depends on the use of borrowed funds and the economic context. Productive investments that yield high returns can justify borrowing despite the associated costs.