Maxine Waters of California is known as a partisan firebrand who gives as good as she gets, especially where President Trump is concerned.
Now, with Democrats assuming control of the House in January, the California Democrat is about to become more visible than ever before, with the power to slow down an important part of Trump's agenda and even shine a light on his company's finances.
"She is a tough and savvy defender of consumer protection and holds the feet of the banks and the Trump administration regulators to the fire," says Mike Calhoun, president of the Center for Responsible Lending.