I watched a video on Fox News which isn’t the most balanced to be sure especially when Hannity is presenting.
A former Dept of Homeland Security (DHS) agent has blown the whistle on deliberate actions after 2008 to delete the files on links of known terrorists. He claims the information in the databases showed links to terror cells and various mosques where both the San Bernadino and Orlando attackers were affiliated. Yet the DHS was ordered to delete the dots linking it all
Of course you need to keep an open mind as to the validity of the source to make the claim but on the other hand Obama is the High Priest of political correctness and the shenanigans with the DoJ Intentionally misleading the judicial system certainly should make you ask questions on both sides.