Speaking to an undercover FBI informant:

“I will kill any kuffar [nonbelievers]. I will follow any place. Wallahi [I swear to God] if I was with Daulah Islam [ISIS] and they said look, we are going to the White House right now. Wallahi, I would go with them without any question.”“Criminal Complaint,” United States District Court for the District of Kansas, U.S. Department of Justice, April 10, 2015, http://www.justice.gov/sites/default/files/opa/press releases/attachments/2015/04/10/booker_complaint.pdf.