The U.S. Department of Homeland Security’s watchdog agency is in turmoil amid allegations that its agents in Texas were told to falsify reports ahead of an office inspection last fall, according to an internal e-mail and interviews.

U.S. policies and laws aimed at improving the nation's immigration system have unintentionally spurred more immigrants – authorized or not – to stay in the United States, according to a new paper released today.

While last month's shooting death of a U.S. Immigration and Customs Enforcement agent in Long Beach by a fellow employee is highly unusual, gunfire involving ICE employees is not.

With an eye toward revolutionizing how defense systems and vehicles are made, the Pentagon has tapped a team of Bay Area-based scientists, engineers and hackers to create a program that will enlist California high school students to build robots, drones and other low- and medium-tech gadgets.