Futures slightly lower ahead of Fed outlook

The U.S. Federal Reserve is expected to hold interest rates steady as it balances continued concerns about the health of the global economy with fresh signs that domestic inflation is starting to rear its head. Manufacturing sales and foreign securities data is due at 8:30 a.m. ET Canada's main stock index fell on Tuesday as Valeant Pharmaceuticals International Inc tanked, overshadowing gains for gold miners and financials.