Réunion is at 37%, which isn't a problem because any company in Reunion could just use an address on mainland France, but there's more: Guadeloupe, Martinique and French Guiana are tariffed at 10%.
Does that make an easy loophole for any EU company wishing to export things to the US at a 10% tariff?
If these published rates actually going to be enforced this way, it seems like the whole EU has a very easy way to use the 10% rate.