Why are they even hearing this case?

[B.See]

16. I know when the 14th was ratified

and also of the arguments against birthright citizenship for Black people in the 1860's.

But yes, mortifying for a variety of reasons. From the article I referenced:

“I think that what Black people need to wake up to is that all of these little attacks on DEI on birthright, what they are all meant to do is to allow government institutions to question who, other than white people, belongs in this society with full citizenship rights,” Dr. Alvin Tillery, a professor of political science at Northwestern University, told theGrio.

Tillery, who is also the director of the Center for the Study of Diversity and Democracy, warned that the “next logical extension” of Trump’s theory on birthright citizenship is that “the framers of the Constitution never really meant for Black people to be citizens.” He continued, “If we can overturn the 14th Amendment, birthright citizenship, doesn’t that also apply to the Blacks? That’s where they will be headed. And so we need to join those efforts vigorously to protect birthright citizenship as Black people.”

But then again, I've been saying (warning) for quite some time, that presumptive, arrogant, privileged racists like Trump NEVER considered Black people to be "real Americans."

Her certainly never thought Obama was. And some of us, at least, were able to read between the lines.