The White House is asking leading AI companies to largely police themselves as the technology becomes more powerful, an approach welcomed by investors but questioned by researchers and consumer advocates. Trump’s hands-off AI policy wins cheers in Silicon Valley but raises new safety concerns Silicon Valley's AI founders and investors have plenty to celebrate. The Trump administration is pushing rapid development of artificial intelligence while stepping away from tighter federal regulation, leaving many decisions about safety to the companies building the technology.That mood was evident during Tech Week in San Francisco, where founders and venture capitalists gathered for events across…