According to German Professor Kerber(4), it is necessary "to establish a Senate that ensures respect for the principle of subsidiarity" and thus limit the powers of the European Commission and the European Parliament. According to this principle familiarized in the federal systems as in Germany, the higher level intervenes only if and to the extent that the objectives are less well at the national, regional or local levels. In defense, Professor Kerber believes that some Germans are "ecologists, an illness with their paci ism" and thus thinks that the French are more ambitious on this point (the Defense policy) and thus advocates an European Defense. He told us of his fears about the new US presidency, "a nightmare thinking of Trump embodying a danger" . The German professor also wants Turkey's candidacy to be ended or the cooperation agreement on the management of immigrants.