By now, you've probably heard of Jen Psaki's response to a question about Texas standing up to Biden's threatened vaccine mandate. She stated that federal law trumps state law. I guess it's true that the best lie should contain a bit of truth. Today, let's answer the question of whether federal law always trumps state law. Let's do so by looking at the original documents, so we can answer this question not only when it comes to vaccine mandates, but all of the acts coming out of Washington, D.C.