India's Sensex index opened almost unchanged today after the US Federal Reserve voted to hold its policy rate steady as expected, but Fed Chair Kevin Warsh's firm commitment to controlling inflation created uncertainty among investors. The Sensex opened at 77,638.86 points, down 15.74 points or 0.02 percent, with 11 of the 16 major industry groups declining at the open. Small-cap and mid-cap indices each fell 0.3 percent. Asian markets moved in choppy trade, tracking Wall Street and a weaker US dollar overnight, after the Fed meeting revealed that three out of twelve monetary policy committee members voted against the decision — the most dissenting votes any Fed chair has faced at the start of a term since the 1970s.