Heavily shorted meme stocks extended their social media-driven rally, with Aethlon Medical AEMD.O soaring 388.2%. By Stephen Culp NEW YORK, June 9 (Reuters) - Wall Street ended a see-saw session lower on Wednesday as market participants awaited inflation data for clues as to when the U.S. Federal Reserve might tighten its dovish monetary policy. Washington lawmakers passed a sweeping bill designed to boost the United States' ability to compete against Chinese technology, providing funds for research and semiconductor production amid an ongoing chip supply drought.