CDU politician Wolfgang Schäuble wrote that such a donation model also existed in the Union parliamentary group. The donation scandal was about an illegal donation practice by the CDU in the 1980s and 1990s.

Kohl took advantage of this loophole and half-jokingly spoke of his "war chest" It is still unclear where the money from Helmut Kohl's “slush funds’ came from, says Schälatable. He was parliamentary managing director of the CDu/CSU parliamentary group from 1981 to 1984.