Here's a foursome of fact-checking from the fine fact-checkers at FactCheck.org…
Trump, Allies Spread Unfounded Claims About Biden's Cancer Diagnosis. Because if you aren't doing your job well, it's always a good idea to demonize your predecessor.
A False Claim About Illegal Immigration and Medicaid. The K.F.F. is a non-profit organization that reports on health and welfare was founded by Henry J. Kaiser but is no longer associated with Kaiser Permanente. Their research — supported by the non-partisan Congressional Budget Office — has told them that "less than 1% of all Medicaid spending is used for covering emergency care for immigrants who are not U.S. citizens." Still, Trump and his mob are trying to sell the idea that slashing funds for Medicaid is merely stopping expenditures on illegal immigrants.
Trump Administration Incorrectly Claims Certainty About Origin of Coronavirus. Lots of people presenting unfounded theories and rumors as facts.
Pro-Trump TV Ad Overstates His Second-Term Economic Record. And this one's a real piece of work.