Le Pen, who denies all charges, will face an appeal trial from next week, with a decision expected ahead of the summer.
U.S. President Donald Trump had slammed the earlier verdict as “another example of European leftists using lawfare to silence free speech” and added “free Marine Le Pen” in a post on Truth Social.
The Trump administration recently pledged to support “patriotic European parties” that seek to fight Europe’s “civilizational erasure” in its controversial National Security Strategy.
The U.S. in recent months sanctioned 11 judges from the International Criminal Court, including a French magistrate who green-lighted an ICC arrest warrant against Israeli Prime Minister Benjamin Netanyahu for war crimes in Gaza.
The U.S. Embassy in Paris did not immediately respond to a request for comment.