Brett Kavanaugh , President Donald Trump’s pick for the Supreme Court, could seek to overturn the landmark administrative law ruling that gives deference to agency expertise, a law professor said.

Conservative scholars have long chafed at the Supreme Court’s 1984 decision in Chevron v. NRDC, which held that a court may not substitute its own interpretation of a statute over a reasonable one by the regulatory agency. For this deference to apply, the court must first find that the...