Wall Street slips as investors pause ahead of Fed decision

The Fed is widely tipped to lift rates 25 basis points, but investors are likely to pay close attention to Fed Chair Janet Yellen's tone and new forecasts for clues on policymakers' thinking on how President-elect Donald Trump's policies will impact growth and inflation. The announcement is due at 2 p.m. ET (1900 GMT), followed by Yellen's news conference 30 minutes later.