The EU wants to stop a big tax on things from Europe. The U.S. leader is not happy because Europe sells more to the U.S. than it buys. The EU says that if you count online services, the U.S. sells more. To help, the EU could buy gas or weapons from the U.S., or make U.S. cars cheaper. But, it is hard to fix problems with food rules and taxes. Experts say the new tax could hurt Europe's money.