Oops, court has very limited options. They can only sanction the administration with civil contempt and levy fines. If the admin choose to ignore the fines, then there is nothing much the court can do. They can refer DOJ to bring in criminal contempt charges, but before that they don't have much options. Do you think DOJ will bring in criminal contempt charges against the admin?

Congress has the right and obligation to oversight the Executive, but they are giving away most of their powers to Executive over the years. The country has been moving towards authoritarianism for quite a while. It's not just a sudden changes and not just the issue created by one individual. Hopefully the democracy is preserved and god bless America!!