Sai Varshith Kandula, a 19-year-old Missouri man, was arrested Monday night after crashing a U-Haul truck into a security barrier near the White House and waving a Nazi flag. He had been planning the incident for six months in an effort to "seize power" from the government, and authorities have clarified that he holds a green card for lawful, permanent U.S. residency. The incident is still under investigation, and it is unclear what charges Kandula may face.