"This case demonstrates that the FBI and our partners in the law enforcement and intelligence communities must continue to remain vigilant in the face of the threats that America faces, in whatever form those threats may present themselves or no matter how creative those who threaten us try to be," said Special Agent-in-Charge Janice K. Fedarcyk of the Philadelphia Division of the FBI. "We must use all available technologies and techniques to root out potential threats and stop those who intend to harm us."
If convicted of the charges, LaRose faces a potential sentence of life in prison and a $1 million fine.
LaRose is the latest American who allegedly has professed allegiance to jihad.
Major Nidal Hasan killed 12 soldiers at Fort Hood last November after he was ordered to deploy to Afghanistan. He fired on the unarmed soldiers after a series of communications with militant Muslim cleric Abu Bakr al-Awlaki, who is hiding in Yemen.
Last June, Muslim convert Abdulhakim Mujahid Muhammad fired on a military recruiting station in Little Rock, Ark., in what he later said was a jihad attack on the U.S. military. One U.S. soldier was killed and one wounded in the assault.
One of the most wanted men of the al Qaeda hierarchy is Californian Adam Gadahn.