Federal Reserve Chair Jerome Powell told Congress this week that interest rates could go up faster and higher than previously planned. WSJ’s Nick Timiraos explains what’s behind the Fed’s change of strategy, and why it’s struggling to tame inflation.  Further Reading: - Powell Says Data Will Determine Size of Next Rate Increase  - Powell Says Fed Is Prepared to Speed Up Interest-Rate Rises  - Why the Recession Is Always Six Months Away  Further Listening: - Mass Layoffs or Hiring Boom — Which Is It?  - Consumers Are Starting to Freak Out  Learn more about your ad choices. Visit megaphone.fm/adchoices