Oversight Chairman: Will subpoena Trump's former accounting firm to obtain financial documents; Trump flip-flops on health care and immigration, makes false claims as he tries to get the story straight; Biden: "Social norms are changing," says he'll be "more mindful about respecting personal space"; Biden responds to women who say he made them uncomfortable; Trump falsely claims his father was born in Germany, windmills cause cancer, 2018 midterms were rigged via Knit