Robotaxi pioneers Waymo and Tesla urged Congress Wednesday to set federal safety standards for self-driving cars, addressing the complication of differing state regulations and staying ahead of global competition.

Roughly half of all immigrant-headed households in the U.S. use welfare -- and among illegal immigrant homes in particular, it's even higher, at 61%, according to a new study Wednesday that argues that's another reason to enforce immigration laws.

Americans are exceptionally anxious about their political system, according to new international polling from Gallup, a situation that sets the country apart from other rich and powerful nations.