Powell said in a speech on Friday the Fed will raise rates as high as needed, and would keep them there "for some time" to bring down inflation that is running at more than three times the Fed's 2% goal.
"While higher interest rates, slower growth, and softer labor market conditions will bring down inflation, they will also bring some pain to households and businesses. These are the unfortunate costs of reducing inflation. But a failure to restore price stability would mean far greater pain," Powell had said in his speech.
"What he calls 'some pain' means putting people out of work, shutting down small business because the cost of money goes up because the interest rates go up," said Warren, whose views on the economy are often influential among progressive Democrats.