As the U.S. warned allies around the world that Chinese tech giant Huawei was a security threat, the FBI was making the same point quietly to a Midwestern university. In an email to the associate vice chancellor for research at the University of Illinois-Urbana-Champaign, an agent wanted to know if administrators believed Huawei had stolen any intellectual property from the school. The FBI has been reaching out to colleges and universities across the country as it tries to stem what American authorities portray as the wholesale theft of technology and trade secrets by researchers tapped by China.