There was an attack on an Army recruiting office in Arkansas IIRC.
The Boston bombings.
Juan would argue with a straight face that none of those were terrorist attacks. He's a loser.
Where DHS is really failing in their mission is allowing massive numbers of illegals live freely in the United States. A large portion of the drug trafficking in this country has been taken over by Mexican gangs. Those gangs have also conducted campaigns to scare blacks out of neighborhoods in LA. Farming communities that had employed illegal labor for decades are now paying a price as Mexican gangs have moved into those areas bringing their associated crime. All Americans are less safe because Napolitano and her boss want to protect illegals.