Cecilia Wong

The government's lawyer urged the court to, quote, correct long-enduring misconceptions of the 14th Amendment's meaning.

Trump attended the arguments, becoming the first sitting president to do so.

Tonya J. Powers, Fox News.

The executive order fails on all those counts.

Swaths of American laws would be rendered senseless.

Thousands of American babies will immediately lose their citizenship.

And if you credit the government's theory, the citizenship of millions of Americans, past, present, and future, could be called into question.

All of this tells us the government's theory is wrong.

The framers of the 14th Amendment meant to have a universal common law rule of citizenship subject to the closed set of exceptions.

And we can't take the current administration's policy considerations into account to try to re-engineer

and radically reinterpret the original meaning of the 14th Amendment.

Swaths of American laws would be rendered senseless.

Thousands of American babies will immediately lose their citizenship.

And if you credit the government's theory, the citizenship of millions of Americans, past, present and future, could be called into question.

All of this tells us the government's theory is wrong.