"Terrorists have used student visas, tourist visas, and more to infiltrate our country and plot significant acts of terror…This is why we must fulfill one of the last remaining recommendations of the 9/11 Commission by moving forward with a biometric entry-exit system to track those who overstay their welcome," McCaul said.
The Department of Homeland Security reported to Congress in January that there are hundreds of thousands of individuals in the United States who entered the country legally, but overstayed their visa.
In December 2015, two Daesh-inspired shooters attacked a social services center in San Bernardino, California. One of the shooters came to the United States under a fiance visa and reportedly posted radicalized messages on her private social media accounts prior to the attack.
