President Donald Trump has called off plans to sign a new executive order on artificial intelligence hours before an expected White House ceremony. He says he's worried the measure could dull America’s edge on AI technology. Trump said he was postponing the Thursday signing because he didn’t like what he saw in the order’s text. The push for some form of government action to vet the most powerful AI systems follows growing concern within the banking industry and other institutions about AI’s ability to find cybersecurity vulnerabilities in the world’s software.