Wendy Vitter, one of President Trump’s judicial nominees, refused to say whether the landmark civil rights case Brown v. the Board of Education was correctly decided, CNN reports.

The seminal opinion held that state laws requiring separate but equal schools violated the Constitution.

Said Vitter: “I don’t mean to be coy but I think I can get into a difficult, difficult area when I start commenting on Supreme Court decisions — which are correctly decided and which I may disagree with.”