My previous company in Bangladesh is no longer in business.My attorney told me to provide the experience letter from coworker.After submitting I140,it came back this way from USCIS “Affidavits & letter from coworkers are not sufficient. Evidence of experience must be in the form of letter from current or former employers …”. My questions-1.IS USCIS looking the experience letter from previous employer in their letter head no matter what company is in business or not at present condition? 2.If I can locate my former owner/officer of the company. Then what exact documents do I need from them to support this. If I get the experience letter from them, will that be sufficient to verify my two year period of employment&experience to work for I140?(3) If not then what documents required?