So trying to classify Ireland a tax haven isn't correct. It might be popular amongst certain political classes and media in the US to do so but it doesn't stack up. Ireland has a flat corporation tax rate of 12.5%. Many other EU countries have rates which can, and often do, end up even lower. Look at France for example where the tax rate drops down to an effective 8% for many of the CAC40 companies (according to the OECD).
The 0.005% rate is NOT the corporate tax rate Ireland charged Apple, its the rate Apple managed wrangle on all their European wide profits by arranging their corporate structures to take advantage of various loopholes in several countries, not just in Ireland. This was perfectly legal under Irish, EU and importantly, US law at the time. Now the EU wants to effectively rewrite history and even the US agrees with Irelands position on this.