CHELSEA CLINTON IS THE PRODUCT OF TWO OF THE MOST POWERFUL BRANDS IN THE WORLD. NOW SHE'S FINALLY CARVING OUT HER OWN IDENTITY--BY JOINING THE FAMILY BUSINESS.... I woke up one day when I was 29 and craved red meat," says Chelsea, now 34, and a self-described omnivore. "I'm a big believer in listening to my body's cravings." ... she's not just another millennial. She's political royalty. And now, finally, she has decided to join the Clinton family business.... ... "People [were] always asking me [since I was a kid], 'Do you want to go into politics?' " she tells me,...