Question

what does unconstitutional means

Answer 1

they won't accept google definition but on your own word

Answer 2

Well, you just need to reword it to be simpler. One way you could say it would be "not backed up by the US constitution".

Answer 3

not allowed by or against the ideas and principles of the Constitution. By making such a judgment, the court is declaring the law or act to be void and unenforceable—citizens are not bound to and executive agencies may not enforce the law or act