Question

What step can a party immediately take once it loses its case in U.S. District Court?

Answer 1

It can repeal the decision and take the case to a higher court with more authority. this can go as far as the supreme court. if the party is still unhappy with the decision given by the supreme court, it cannot be repealed any further, making it the final decision. 

Answer 2

It can appeal to the U.S Circuit Court of Appeals