Inflation in its purest definition...not the current definition given in textbooks and dictionaries, is an increase in aggregate money supply. Higher prices are the result of inflation since more currency is chasing the same number of goods.
Higher interest rates, since foreigners loan America alot of money are necessary to keep their money coming here.
The US dollar has enjoyed a nice bounce since the Fed began raising rates from historic lows. USD is still down much from previous highs, but higher rates have helped.