Here is a link to the full 19 page report by the cia ig. Its quite an interesting read. There are some redactions (seemingly when referring to specific individuals), but its pretty scathing. Check out the dates in the document..and what was done in 01 versus what was (not) done prior to President Bush. Not a whole lot of specifics, but what is there is quite revealing, imho.
https://www.cia.gov/library/reports/Executive%20Summary_OIG%20Report.pdf
Thanks !!
"If IC Officers had been able to review and analyze the full range of information available before 11 September 2001, they could have developed a more informed context in which to assess the threat reporting of the spring and summer that year."