Sports betting is now mostly legal, and, if you watch sports, its advertisements are inescapable. Now, a series of scandals has rocked the professional leagues. When everyone bets, odds are – someone will cross a line.  Guest: Jay Caspian Kang, staff writer for “The New Yorker” and author of The Loneliest Americans.Want more What Next? Subscribe to Slate Plus to access ad-free listening to the whole What Next family and across all your favorite Slate podcasts. Subscribe today on Apple Podcasts by clicking “Try Free” at the top of our show page. Sign up now at slate.com/whatnextplus to get access wherever you listen. Learn more about your ad choices. Visit megaphone.fm/adchoices