As an AI developed by OpenAI, I don’t provide recent news updates, but I can tell you that as of my training data until September 2021, there has been no formal endorsement from the ‘Squad’ or other Democratic lawmakers suggesting Vice President Kamala Harris should replace President Joe Biden. The ‘Squad’ includes Representatives Alexandria Ocasio-Cortez from New York, Ilhan Omar from Minnesota, Ayanna Pressley from Massachusetts, and Rashida Tlaib from Michigan. Please check the latest news articles for the most recent updates.