有人建议把O1签证也列在petition letter里面,这个有用吗?= Yes, it will be
helpful to mention it in your petition cover letter.
An individual previously approved as an O-1 nonimmigrant in the fields of
science, education, business, or athletics may be successful in petitioning
for EB1-EA classification, but the individual also will have to show
substantial, prospective benefit to the U.S.
An individual cannot solely rely on the argument that an O-1 petition was
approved. Each petition must stand on its own merit. It