Inflation has Americans saying a dollar just doesn’t stretch as far as it used to. Similarly, when looking at the exchange rate and price of U.S. commodities, China is saying the yuan just doesn’t stretch as far as it used to. Relative to other currencies, the U.S. dollar has been strong the past couple of years, and experts say it is one factor hampering commodity exports. Tanner Ehmke, CoBank’s lead economist for grains and oilseeds, explains higher interest rates, which the U.S. Federal Reserve has implemented in an attempt to fight inflation, has encouraged investment in the U.S. dollar and helped drive up its value, making exchange rates challenging for other countries.