Tuesday on the News Hour, in his final speech at the UN General Assembly as president, Joe Biden implores world leaders to work toward peace. Lawmakers grill the company behind a weight loss drug, questioning why the U.S. pays more than other countries for the same product. Plus, as more Americans become caregivers for veterans, a look at what's creating the need and the burden put on families. PBS News is supported by - https://www.pbs.org/newshour/about/funders