The U.S. dollar edged lower Tuesday, but remained near a two-week high as traders awaited a widely expected interest rate hike from the Federal Reserve later in the session.At 02:55 ET (06:55 GMT), the Dollar Index, which tracks the greenback against a basket of six other currencies, traded 0.1% lower at 100.960, after pushing as high as 101.65 overnight for the first time since July 11.The dollar received a boost Tuesday when data showed U.S. consumer confidence rose to a two-year high in July as inflation retreated while the economy showed resilience despite the higher interest rates.The U.S. Federal Reserve completes its two-day policy-setting meeting later this session and is widely expected to authorize a quarter-point hike, in what would be the 11th hike in its past 12 policy meetings.However, uncertainty exists over whether the central bank will seek to increase rates again later in the year or whether this hike marks the end of its aggressive tightening cycle. Investing.com