I am as pro-European as they get but what should we do when things go downhill as they did in e.g. Belgium or Czechia? We have no influence on preventive measures there. All we can do is to deal with it and to be as little affected by it as possible. Beside that, a more fine-grained control than national borders would be preferrable anyways in that case, so it would be not only be about locking fellow Europeans out but fellow Germans as well. There is no base in law for that though and attempts to limit visits between federal states have therefore been anulled by courts. Can we agree that it is not an easy situation?