Ms. Gillibrand’s House votes on immigration amounted to a repudiation of New York’s special gift to America. She allied herself solidly with expulsionist Republicans, who reject assimilation in favor of locking down the border, deporting 12 million illegal immigrants and enshrining English as America’s one true tongue. She has favored enforcement rigidity over common sense; she was one of the first to denounce former Gov. Eliot Spitzer’s well-meaning effort to make sure illegal immigrants drive with licenses and insurance.

Ms. Gillibrand has not shown that she understands the ineffectiveness and moral bankruptcy of enforcement-only schemes.