They can’t without a constitutional amendment. They might still try to argue that the current constitution says something it doesn’t; they might just extrajudicially say “fuck you” to it.
But the only ones talking about it are assholes and - to be clear - not a majority of Americans.
And weren’t they talking about getting rid of “birth right” citizenship in the US? So that might not even be how it works in the US anymore.
They can’t without a constitutional amendment. They might still try to argue that the current constitution says something it doesn’t; they might just extrajudicially say “fuck you” to it.
But the only ones talking about it are assholes and - to be clear - not a majority of Americans.