Theymos' policy is usually only to remove things or comply if forced or compelled to by law ie if a law enforcement agency merely asks for some info he probably won't give it to them unless there's a warrant or subpoena and this will probably be the same. If this is in fact enforceable by US law then I'm sure he will comply unless he decides to fight it. If you check theymos' posts he has previously commented on a similar question about what he would do about EU privacy laws and I think he stated they would be disregarded and referred to them as EUSSR or something  .