What We Know About the ISIS Plot to Attack Trump Tower, White House

The U.S. Department of Justice recently announced the arrest of a South Carolina man who stands accused of providing material support to the foreign terrorist group known as the Islamic State of Iraq and al-Sham, or ISIS. The man, 34-year-old Kristopher Sean Matthews (aka Ali Jibreel), is accused along with another man of conspiring to carry out terrorist attacks against the White House, Trump Tower in New York City, and other high-profile targets.