At this point, Hassan interjected to explain that habeas corpus is, in fact, “the legal principle that requires that the government provide a public reason for detaining and imprisoning people.” In other words, it’s the opposite of what Noem said. It’s not a right the president possesses, but a right the people possess against the president.

The homeland security secretary was asked to define habeas corpus. Her outrageously wrong answer was humiliating — but it was also important.