Janet Yellen, who is poised to become secretary of the Treasury, will immediately have her work cut out for her. The U.S. economy is in a precarious state and Congress is consumed by partisan politics. Ms. Yellen, however, is no stranger to crisis. She has already held the government’s other top economic jobs — including chairwoman of the Federal Reserve from 2014 to 2018, helping the country through the last major financial emergency. Now, facing another steep challenge, we look at the measures she might take to get the economy humming again. Guest: Jeanna Smialek, who covers the Federal Reserve and the economy for The New York Times.  We want to hear from you. Fill out our survey about The Daily and other shows at: nytimes.com/thedailysurvey For an exclusive look at how the biggest stories on our show come together, subscribe to our newsletter. Read the latest edition here. Background reading: Ms. Yellen became an economist when few women entered the discipline....