Every tourist who comes to the United States is expected to present a visa, one that meets three basic requirements. It must be valid; it should not be damaged; and it needs to be the right visa, i.e. one that agrees with the tourist's stated reason for traveling to the United States. Sometimes tourists have certain questions that relate to specific details, in regard to those basic tourist visa requirements.

For example, a tourist who is planning a second or third trip to the U.S. might have an expired passport. In that instance, there is a visa in the earlier passport. Consequently, upon making a return visit, that same individual must bring both the new and the old passport.

Both passports are to be presented at the tourist's port of entry. The person who examines those passports will put an admission stamp in the new passport, along with the annotation VIOPP. That stands for Visa-in-old-passport. That annotation indicates that the tourist's visa can be found in the other passport. Tourists must understand that they should never take the visa from one passport and put it in a different one. That would violate the established requirements.

A tourist's question, regarding requirements for visas, might also relate to another problem. It could concern the visa's expiration date. For example, a tourist's concerns might reflect the fact that his or her visa will expire on a day that falls within the time of a scheduled bali tour to the United States. Fortunately, that is not a problem, due to the tourist's possession of an I-94 card.

Visas do not provide information on the authorized length of any one tourist's visit, i.e. the period of time that he or she is authorized to stay in the United States. A Form I-94 provides any official at a port of entry with details on the arrival and departure time for the entering or departing tourist. The information in the I-94 is valid, even if the tourist's visa has expired.

Finally, it should be noted that some visas require admissions processing following the entry interview. The need for such admissions processing can extend by up to 60 days the length of time that a visa-applicant must wait, before being granted that document. Applicants will be warned about the need for such processing and should allow time for that procedure. In other words, the affected individuals should plan to submit an early application.

Though the process is simple, you may be uncertain about some of the facts or documents that are needed. In case you are busy and do not have time to get the complete paperwork submitted or have queries, it is bets to ask an immigration attorney service. Most of them are extremely professional and extend full-cooperation and assistance with all visa formalities and requirements. They can help you with filing up the forms to ensuring and double checking that all documents are attached before you submit them at the US consulate and send the transcripts to the Universities.