Twenty years after the terrorist attacks on September 11, 2001, the establishment of the Department of Homeland Security (DHS) looks like one of the most important and effective government responses to the traumatic events of that day. While DHS has faced its share of challenges over the past two decades, the United States is much more secure today because it is there. We have not had another terrorist attack on our homeland as large and deadly as 9/11, and most smaller attempts have been stopped.
As security threats to our nation have evolved, DHS has continued to adapt. For example, in recent years it has increased its focus on cyber threats and domestic terrorism. But DHS cannot diminish its original reason for being—defending our homeland against foreign terrorist threats, especially in light of the recent U.S. withdrawal from Afghanistan, and the likelihood that will increase the possibility of terrorist attacks on the United States.