christina? >> reporter: the fed is in a tough spot. it doesn't want to raise interest rates too much. it wants to protect against the economy overheating. that's the case for raising interest rates. investors here today have come to terms with the fact the fed will hike rates today, but what they will be listening for is jerome powell's comments and what he says about the possibility of federate hikes in 2019. whether or not jerome powell is sympathetic to the volatility we've seen on wall street and whether he mentions economic data and any softening in the economy. we've seen little signs of that here and there, john, for example, the housing and the auto markets are showing some signs of weakness and we have companies. a range of corporate companies