After the San Bernardino Terrorist attack, the FBI, within two days, let the Press, and anyone in the Apartment complex to rampage the Terrorist’s apartment. Look at the photos the Press took of the apartment. The refrigerator was pristine, it had not been touched. IDs were left on the beds, files were left untouched. That apartment was not Searched.
The FBI and CIA closed the files on the Boston Bombers before the bombing. They had them in their sights for years and Saudi Arabia, England and Russia sent warnings but noooooo, they ignored all the evidence and closed the file.