You would need some sort of legal cause.
Proof that he had lied on his application.
I don’t doubt that you might find it if you searched hard enough.
At the very LEAST Trump should start a full-scale investigation into his activities, put much pressure on him and MAKE SURE to let the world know of his meddling in American Politics.....Then drone his sorry azz...
Have Congress call him before them to answer questions about the organizations he supports. If he refuses he immediately becomes eligible for revocation of his citizenship. If he does come to testify any number of the organizations he supports financially can be deemed subversive making him eligible for revocation of his citizenship. 8>)