The Constitutional Court of South Africa has just ruled that all wives in a Muslim marriage are entitled to a claim from the estate of a husband who dies without a will.
As far as we know, polygamy has never been legal in South Africa. Until now, it has never been recognized. We suspect that polygamy has simply been recognized due to the influx of Muslims into the nation through immigration, as well as conversion to Islam.
This has previously happened in Great Britain. What the host nation ends up with is de facto legalization of polygamy through some recognition provision.
This is absolutely letting Shariah into Western legal systems because Shariah is the legal authority that governs marriage in Islam.