The countdown is on to the Fed's rate decision on Wednesday as policymakers begin their two-day meeting. Although the central bank is expected to keep rates unchanged, Wall Street

The S&P 500 and the Nasdaq were lower on Monday after U.S. President Donald Trump rekindled worries about the fallout of a global trade war by introducing new tariffs, while focus remained on the Federal Reserve's monetary policy decision later this week.

Wall Street's main indexes opened lower on Monday after President Donald Trump rekindled worries about the ramifications of a global trade war by introducing new tariffs, while focus