A stairlift company is taking shots at President Joe Biden for repeatedly falling up the stairs in two new social media ads. Acorn Stairlifts Inc. mocked Biden for having trouble walking up the stairs of Air Force One, which have given him problems. “Tired of stumbling up the stairs? We strive to help all of those in need across our nation. Whether you live in small town USA or on Pennsylvania Avenue, we are ready to help you regain your independence. Contact us for your free, no-obligation quote today!” The tweet read. The company's post included a photo of a...