Experts say former President Donald Trump can raise a number of plausible legal defenses against federal charges that he conspired to defraud the U.S. with bogus claims of election fraud, obstruct Congress in its counting of electoral votes, and deprive Americans of their rights.

But many veterans of federal criminal cases say each of the former president’s most viable arguments can be overcome, based on the known facts and evidence and the current state of the law. Here are some of Trump’s possible defenses, and their flaws.