I think it was a pretty dumb move for you to turn down a job which you earned. Good luck trying to find a job I am not sure you know but there are not many jobs out there. Yes, you did a noble thing but I need to make sure I eat first before I can help my fellow man.
Second, you can always travel. The Eiffel Twoer is not going anywhere. My first priority would be find a job ASAP! You are 21 years old and have your parents supporting you which is great. Mommy and daddy will not be there forever. Instead of wasting time eating shit around the US..start beefing up your resume, go to netwokring events, and figure out wtf your going to do to support yourself.
Once you have a job and saved some cash then you can travel and experience all the beauty the US has to offer.