Senator Bob Menendez, a New Jersey Democrat, is facing federal bribery charges. Federal agents found hundreds of thousands of dollars in cash and gold at his home.Menendez is remaining defiant and says he will not resign. The senator has faced previous corruption charges — the case ended in a hung jury.We discuss why these types of cases can be so challenging for prosecutors to win.This episode: White House correspondent Asma Khalid, justice correspondent Ryan Lucas, and political correspondent Susan Davis.The podcast is was produced by Casey Morell and Elena Moore. Our editor is Eric McDaniel. Our executive producer is Muthoni Muturi.Unlock access to this and other bonus content by supporting The NPR Politics Podcast+. Sign up via Apple Podcasts or at plus.npr.org. Connect:Email the show at nprpolitics@npr.orgJoin the NPR Politics Podcast Facebook Group.Subscribe to the NPR Politics Newsletter.