The short answer is that EASA has rules that requires aircraft to both depart with specified minimum fuel amount, and to land with a specified minimum fuel amount. FAA only requires aircraft to *depart* with a specified minimum fuel amount. There is no rule that specifies a landing amount. As mentioned above, running out of fuel prior to landing can still be prosecuted under the 'careless & reckless' rule - but that won't apply if you land with any amount of fuel on board.