Merkel's CDU pens new ethics rules after mask scandal DW has obtained an internal CDU document issued in the wake of several corruption-related retirements. The paper urged parliamentarians to keep in mind that they are role models for society. The paper calls on politicians found to have mixed business with politics unacceptably to immediately quit the party Chancellor Angela Merkel's Christian Democrats (CDU) and their Bavarian sister-party, the Christian Social Union (CSU), have been rocked by corruption scandals of late. The unwelcome news of CDU and CSU politicians profiting handsomely off of coronavirus masks and the party's disastrous performance in state elections in Baden-Württemberg and Rhineland-Palatinate have set alarm bells ringing at the party's highest levels.