grown stronger and stronger, the federal reserve has begun raising short-term interest rates to try to keep the economy from overheating and to try to keep inflation in check, so for stocks there's concern those rising rates will eat into profits. they will make borrowing more expensive and potentially slow down the economy. a glaring example already happening. mortgage rates, levels we haven't seen in several years. president trump blames the fed for the selloff saying the fed has gone loco. some say the tax cuts that president trump pushed through juiced corporate earnings and drove up stock prices like pouring gasoline on the economy. now it's time for the fed to cool down the red hot economy by raising interest rates. jake? >> alison, stick around. i want to bring in a global business columnist and associate editor for "the financial times." as you heard alison there, president trump blames the federal reserve for this essentially saying it's their fault for raising interest rates. is he right? >> well, you know, when interest rates go up it makes debt more expensive. there's more debt out there, 60