U.S. Sen. John Cornyn has been one of the most consistent Republican defenders of the EB-5 investor visa program over the past several years — advocating for its reauthorization, intervening in its implementation, and signaling support for preserving it even amid President Donald Trump’s proposed “Gold Card” alternative. During much of that same period, Cornyn’s daughter, Haley Cornyn, worked at Greenberg Traurig, a global law and lobbying firm that has structured billions of dollars in EB-5 investment deals and lobbied on matters related to the program. The overlap between Cornyn’s legislative advocacy and the financial interests of his daughter’s employer...