TREASURIES -US yields fall after inflation data; focus on 30-year bond sale, Fed

* U.S. yield curve widens inversion post CPI data * Fed funds futures price in first rate cut in May 2024 * Fed not likely to signal pivot from current tightening * Focus on 30-year bond auction (Adds new comment, adds 30-year auction outlook, Fed preview, updates prices) By Gertrude Chavez-Dreyfuss NEW YORK, Dec 12 (Reuters) – U.S. Treasury yields edged lower on Tuesday after data showed underlying inflation in the world's largest economy came in line with forecasts, reinforcing views the Federal Reserve will hold rates steady after its two-day policy meeting on Wednesday. It was last at 4.215%, down 2.3 basis points (bps). Tuesday's report showed the core consumer price index (CPI), excluding the volatile food and energy components, increased 0.3% in November after climbing 0.2% in the prior month, meeting economists' expectations.