His government has done so at least three times. It passed a law making it easy for politicians to ignore conflicts of interest, authored tendentious legislation on media ownership (Berlusconi controls much of Italy's media), and effectively got the Prime Minister off the hook on a series of criminal indictments.
La visión de la democracia que tiene Berlusconi (más populista que liberal) es que a los triunfadores se les permite todo, incluso cambiar las leyes para favorecer los intereses del primer ministro.