Casac & Corruption Watch support Parly probe into Mkhwebane Lawyers for the Council for the Advancement of the South African Constitution and Corruption Watch have opposed Busisiwe Mkhwebane’s application to have Parliament’s impeachment rules declared unconstitutional. FILE: Public Protector Busisiwe Mkhwebane. Picture: Abigail Javier/Eyewitness News. 2 hours ago CAPE TOWN - Civil society organisations have on Wednesday made in support of a parliamentary inquiry into the Public Protector. Lawyers for the Council for the Advancement of the South African Constitution (Casac) and Corruption Watch have opposed Busisiwe Mkhwebane’s application to have Parliament’s impeachment rules declared unconstitutional. The organisations have joined proceedings as “friends of the court”.