In May, President Obama designated homegrown terrorism as one of the country's top national security priorities. His counterterrorism adviser John O. Brennan recently cited seven other cases in the past year:
July 2009: Daniel Patrick Boyd of North Carolina, his two sons and several other men are accused of discussing violent jihad, possessing rifles and doing military-style training. In September, the government alleged that Boyd obtained maps of Marine Corps Base Quantico in Virginia, and added a charge of conspiracy to murder military personnel.
September 2009: Najibullah Zazi, an Afghan-born resident of Denver, is arrested and later charged with a plot to set off a bomb in the New York subway system.
October 2009: Colleen LaRose, a Philadelphia woman known online as JihadJane, allegedly agreed to kill a Swedish artist who drew a picture of the prophet Muhammad with the body of a dog.
November 2009: Eight Somali-American men are charged with attending camps in Somalia and training with al-Shabab, the same group linked to the two New Jersey men arrested Saturday.
November 2009: A Virginia-born man of Palestinian descent, Maj. Nidal Malik Hasan, an Army psychiatrist, is accused of killing 13 people at Fort Hood, Tex.
December 2009: Five men from Alexandria are arrested in Pakistan and later charged with an extensive plot that included plans to fight U.S. soldiers in Afghanistan and possibly an attack in the United States.
May 2010: Faisal Shahzad, a Pakistani-born man who became a U.S. citizen, allegedly tries to set off a car bomb in Times Square.
SOURCE: Staff and wire reports