According to ChainCatcher, three U.S. senators wrote to Abigail Johnson, CEO of Fidelity Investments, on November 21, asking Fidelity Investments to reconsider its decision to allow retirement plan participants to invest in Bitcoin, saying that the industry has become increasingly "turbulent and chaotic."

Earlier news, Fidelity Investments plans to allow retirement savers to deposit their Bitcoin into 401(k) accounts. The 401(k) plan is a retirement benefit plan provided by American companies to their employees, allowing employers to establish a tax-deferred pension savings plan for employees, and this pension can be invested in fund stocks and other investments. (Decrypt)