Stock futures are lower Tuesday as investors react to a steady stream of earnings reports while awaiting news on tariffs and the results of the two-day Federal Reserve meeting that is set to start today.

The countdown is on for 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 will listen closely to Chair Jerome Powell's comments on how the economy is holding up.

U.S. stock futures were little changed Monday night, as investors awaited the start of the Federal Reserve's first policy meeting since President Donald Trump announced "reciprocal" tariffs in early April.