Leaders in Europe want to stop new taxes on things from other countries. The U.S. leader is not happy because Europe sells more to the U.S. than it buys. Europe says that if you count online services, the U.S. sells more. To change this, Europe could buy gas from the U.S. or spend more money on defense with U.S. companies. They could also make taxes on foreign cars lower. But, rules about food and taxes in Europe are hard to change. Experts say that if the new taxes happen, Europe's money could go down next year.