President Trump has signed an executive order potentially allowing private equity investments in 401(k) retirement plans. The move aims to increase returns for retirees but raises concerns about higher fees and illiquidity compared to traditional investments like stocks and bonds. Proponents argue that private equity can offer diversification and potentially higher yields, while critics warn of the complexity and potential risks for average investors. The Department of Labor is expected to provide further guidance on the implementation of this order, including safeguards to protect retirement savers.