Last week's ruling by the German Constitutional Court, coupled with demands by one conservative party for changes to the constitution, may not only jeopardize Berlin's schedule for the ratification of the Lisbon Treaty. The Karlsruhe ruling also threatens future steps toward European integration.

When the parliamentary group of the Christian Social Union (CSU) -- the Bavarian sister party to Chancellor Angela Merkel's conservative Christian Democrats -- met in Berlin last Thursday, they had a hero to celebrate. "You have saved our honor," said CSU representative Hans-Peter Friedrich to his party colleague and friend Peter Gauweiler.

Gauweiler, a lawyer from Munich -- and a political maverick who is the enfant terrible of the conservative group in the German parliament or Bundestag -- was largely successful with the legal complaint he filed with the German Constitutional Court against the EU Lisbon Treaty. Now it's official: The ratification by the overwhelming majority of the German parliament -- including the CSU -- was negligent. In essence, the court ruled that by passing the so-called "accompanying law" to the Lisbon Treaty, which determines the rights of German parliament to participate in European legislation, the representatives had relinquished significant monitoring rights to Brussels. According to the judges, this unconstitutionally subjects the people that they represent to the whims of a bureaucracy that lacks sufficient democratic legitimacy.

But the CSU cares little about past errors. Now the idea is to push ahead and "Gauweiler" them! Last Thursday, the politicians from Bavaria decided to follow up their success with a new set of demands. They want the Lisbon Treaty to be ratified only under condition that the new EU law would only be valid in Germany "in accordance with the decision by the German Constitutional Court." They are now demanding a solution that gives "maximum" parliamentary influence over future EU policy.