
The EU is trying to head it off, by raising rates, because their dominant constituency, Germany, went through a terrible inflationary period after WWI and they never want to repeat those mistakes.
At the same time, the U.S.'s historical nightmare is the Great Depression, where deflation (a decrease in price levels) and a credit crunch crushed the country for many years. So the Fed is willing to live with Inflation if it means no deflation.
Interesting how we try so hard not to repeat the mistakes of the past.