Hope this helps you...Did you email the US Embassy to check if you can apply for a US Visa using the Certification of Identity (COI)....to my knowledge you will have to apply for an American Visa using your COI. Are you still awaiting your hearing.....
You can travel, apply for a Refugee Travel Document, but make sure the country you travelling to accepts the RTD, it is not an unusual question, Refugees sometimes need to travel for work purposes...