I was actually waiting for them to declare the Constitution unconstitutional.
See article VII of the original Constitution ...
Done in Convention by the Unanimous Consent of the States present the Seventeenth Day of September in the Year of our Lord one thousand seven hundred and Eighty seven and of the Independence of the United States of America the Twelfth In witness whereof We have hereunto subscribed our Names,
.
But they'll most likely say that teaching the Declaration of Independence is unconstitutional before they say the Constitution is unconstitutional.