Joe Biden may have dipped in the polls recently but the 81-year-old US president wasn't afraid to take the plunge with his family Thursday on their annual Thanksgiving holiday trip. Democrat Biden has been coming to Nantucket for the Thanksgiving holiday with his family almost every year since the 1970s, but is likely to be needing a holiday more than ever this year. "Annual Biden fam polar bear plunge Happy Thanksgiving!" Naomi Biden wrote on X, formerly Twitter.