Impact investing has been gaining ever more acceptance in the past several years and the removal of two federal regulatory barriers last October is expected to further accelerate growth in the field. In one of those actions, the Department of Labor issued a revision of 2008 guidance that was said to have had a chilling effect on investing that aims to achieve social ends as well as investment returns. A month earlier, the IRS gave a boost to impact investing with an announcement that private foundations could use their endowments to make impact investments that made less than market-rate returns.