Senators Bernie Sanders and Elizabeth Warren are urging the U.S. Department of Labor to abandon a proposed rule that would allow cryptocurrency investments in 401(k) retirement plans. The senators argue that including crypto in retirement plans could expose workers to significant financial risks due to the volatile nature of digital assets. The proposed rule has sparked debate over the appropriateness of cryptocurrencies in retirement savings, with proponents highlighting potential growth opportunities and critics warning of the potential for substantial losses. Sanders and Warren's opposition underscores ongoing concerns about the stability and security of crypto investments in traditional financial products.