U.S. law enforcement worried about copycat vehicle-ramming attacks

WASHINGTON (Reuters) -U.S. law enforcement and intelligence agencies are concerned about copycat vehicle-ramming attacks following the New Year's Day attack in New Orleans by a U.S. Army veteran, according to a U.S. law enforcement intelligence bulletin published on Friday. The bulletin was issued a day after the FBI said Shamsud-Din Jabbar, a 42-year-old Texas native, was "100 percent inspired" by the Islamic State militant group to drive a truck into New Year's Day revelers in New Orleans, kil