Accenture, the outsourcing giant, is switching its accounting base from Bermuda to Ireland, amid growing political hostility towards tax havens and tax avoidance…The Obama administration is set to bring in laws to clamp down on avoidance, which is prompting many large firms to look to sympathetic tax regimes in Europe. In its regulatory filing, Accenture said the new laws had in part motivated its flight from Bermuda. Unlike Bermuda, Ireland has tax treaties with the US…