Form I-134, Affidavit of support from US relative or letter from a relative inviting you to visit, stating you are welcome to stay with him or her. Bank Statements . Personal financial statements. Evidence of current sources of income . If you are coming to the US on business, a letter from your foreign employer explaining the reason for your US trip.
First impression is the last impression.
Either you are a tourist or you are not . The Consul can see through your application very quickly no matter how and what you say. Unless your circumstances change, it is unlikely that once declined application for tourist visa, will be successful on the second attempt. If US doesn't have any category in which you fit in, consider Canada . Find out how we help you get a job.