evidence: The criminal charges against former President Donald Trump related to efforts to overturn the results of the 2020 presidential election are some of the most serious allegations facing him, one law professor told NPR. [...] Trump is currently facing dozens of criminal charges in two other cases. One in Florida is based on his alleged withholding of classified documents, and a second in New York is over the accounting of hush money payments made in 2016. [...] Prosecutors list alleged efforts by Trump and his allies to interfere with election proceedings in the U.S. and by pressuring officials in several states to overturn the results.