President Joe Biden, in a visit Tuesday to the epicenter of the technology industry, pointed to the dangers of unrestrained social media as he called for federal laws to protect Americans from fast-accelerating new artificial intelligence. “Social media is already showing us the harm … powerful technology can do without the right safeguards in place,” Biden said before a meeting with AI experts and researchers at the Fairmont Hotel in San Francisco. “That’s why I said at the State of the Union that Congress needs to pass bipartisan privacy legislation to impose strict limits on personal data c...