I sat down with Lionel Shriver, author of “A Better Life,” to unpack why the American immigration debate has become so unreasonable. She argues that the “nation of immigrants” mythology is a kind of progressive moral blackmail, preventing Americans from asking basic questions about assimilation, national self-interest, and cultural cohesion. We also discuss whether Islamic immigration is compatible with liberal democracy and why immigration can’t fix collapsing birthrates. Lionel makes the case that the West has lost its sense of self-confidence—and now, its instinct for self-preservation.