Unfortunately, this gets into the thorny question of whether something is a lie if the speaker really believes it.
The #Trump admin actually believes a lot of things that are factually wrong. Courts have trouble addressing such situations as they're supposed to be arbitrators of law, not of fact, so they're generally supposed to judge based on the record that's put before them.
It says a lot that these days have reenergized debates among legal scholars as to when factual errors are so egregious that a court has to call them out.