The results of all races are posted after the end of the race and racers have X amount of time to protest. I know that MEA has protested in the past which is why we wait for results. And at championship events, there are always podium ceremonies and medals given out. If you were 2nd, you should have been called to the podium and they hand a medal for around your neck. Did they do that?
Let's assume you failed to check the results and USAC got the results wrong. Well, as I said in another post, racing is not fair and not always accurate. You had a great race in a tough field and the outcome would certainly be different if you did not flat. However, if there is a lesson learned, if you podium at a championship event or think you did, check the results and show up for the medals and podium pics.