IIRC, the US economy showed signs of a serious recession at the end of ’01 and early ’02.
Anyone that blames Greenspan and doesn’t stop to consider that Bush had far more to gain from the creation of the housing bubble than anyone else did is fooling themself. Bush41 didn’t get a second term because of the ’91 recession and Bush43 made damn sure that he wasn’t going to be hung by the same rope his dad got hung by.