Sunday on PBS News Weekend, elite women's tennis is back in China for the first time since Chinese tennis star Peng Shuai's disappearance. What the lack of regulation for tattoo ink means for millions of Americans. The legal loophole that results in unexpectedly high bills for emergency medical transportation. Plus, the story of Lydia Mendoza, the first queen of Tejano music. PBS NewsHour is supported by - https://www.pbs.org/newshour/about/funders