When the data is extended to include individuals who conducted attacks inside the United States that were foiled or otherwise failed to kill anyone, there are only four cases that the travel ban could have applied to. However, in at least two of those cases, the individual entered the United States as a child. In a third case the individual had a history of mental illness and assault not related to jihadist terrorism. In a fifth, non-lethal attack Adam al-Sahli, who conducted a shooting at a military base in Corpus Christi on May 21, 2020, was born in Syria but was a citizen because his father was an American citizen and thus would not have been subject to the travel ban.

On March 3, 2006, Mohammed Reza Taheri-Azar, a naturalized citizen from Iran, drove a car into a group of students at the University of North Carolina, injuring nine people. However, Taheri-Azar, though born in Iran, came to the United States at the age of two. As a result his radicalization was homegrown inside the United States.



On September 17, 2016 Dahir Adan, a 20-year-old naturalized citizen from Somalia - though born in Kenya, injured ten people while wielding a knife at a mall in Minnesota. However, like Taheri-Azar, Adan had come to the United States as a young child.



On November 28, 2016 Abdul Razak Ali Artan, an 18-year-old legal permanent resident who came to the United States as a refugee from Somalia in 2014 -- having left Somalia for Pakistan in 2007 -- injured eleven people when he rammed a car into his fellow students on the campus of Ohio State University and then proceeded to attack them with a knife. However, it is not clear that the attack provides support for Trump’s travel ban. Artan left Somalia as a pre-teen, and if he was radicalized abroad, it most likely occurred while in Pakistan, which is not included on the travel ban. Furthermore, it is far from clear that Artan radicalized abroad rather than inside the United States, and in a Facebook posting prior to his attack, he cited Anwar al-Awlaki, the Yemeni-American cleric born in the United States, whose work -- which draws largely upon American culture and history -- has helped radicalize a wide range of extremists in the United States including those born in the United States.

On November 12, 2017, Mahad Abdirahman, a 20-year-old naturalized citizen who was born in Somalia, stabbed and injured two men at the Mall of America. During his trial, Abdirahman stated he was inspired by ISIS. However, Abdirahman’s case is far from clear evidence for the travel ban. He had previously been hospitalized for mental illness and prescribed medication that he stopped taking. He also faced an earlier assault charge having stabbed a psychiatrist with a pen.