Wall Street has a new top cop. And Elizabeth Warren is a big fan of him

A new sheriff is coming to Wall Street -- and, for a change, he's not a friendly face.

In a win for Elizabeth Warren and progressives, President-elect Joe Biden announced Monday he is tapping Gary Gensler to lead the Securities and Exchange Commission. Gensler made few friends, and plenty of enemies, during his time as an Obama regulator. As chairman of the Commodity Futures Trading Commission, Gensler helped craft the Dodd-Frank financial reform law that the industry loudly opposed. Gensler then moved to swiftly implement Dodd-Frank much faster than other regulators.