Sen. Elizabeth Warren (D-Mass.) isn’t the only U.S. politician to look at the cryptocurrency industry with a critical eye, but she may be the most sharp tongued. “Instead of leaving our financial system at the whims of giant banks, crypto puts the system at the whims of some shadowy faceless group of super coders and miners, which doesn’t sound better to me,” she said at a U.S. Senate Banking Committee meeting in July.