Washington, New York, and Los Angeles are among the cities that tightened security as the FBI and the DHS warned of threats ...

A memo on Saturday from U.S. Customs and Border Protection Commissioner Rodney Scott issued the warning, The Hill reported ...

Over the past four years, thousands of Iranian national have been documented entering the United States illegally and countless more were likely in the known and unknown got-a-ways.” ...

Iran sleeper cell threat is now a growing concern in the U.S. after Donald Trump suddenly left the G7 summit, reportedly due ...

A CBP memo suggests “the threat of sleeper cells ... has never been higher,” even as it says it has no “specific credible ...

Sleeper cells are spies or terrorists who operate in rival countries and remain inactive until they are essentially ordered ...

Federal officials are warning that the threat of Iranian sleeper cells inside the United States has surged following US ...

"Though we have not received any specific credible threats to share with you all currently, the threat of sleeper cells or ...

Iran threatened US President Donald Trump that it would activate sleeper cell terror attacks across the United States if he dropped a bomb on nuclear targets when he was at the G7 according to fresh ...

The threat of sleeper cells in the U.S. has “never been higher,” though there are no current specific threats, according to U ...