A citizen of a foreign country seeking to enter the US must generally first obtain a US visawhich is placed in the traveler’s passport, a travel document issued by the traveler’s country of citizenship.

Certain international travelers may be eligible to travel to that US nation without a visa if they meet the requirements to travel without such a document. However, the vast majority need this requirement.
In addition, there are different types of visas that are divided into immigrant visas and non-immigrant visas. Of this last group, the most popular are those of visitor B-1/B-2for nonimmigrants traveling temporarily for business (B-1) or pleasure (tourism) or medical treatment (B-2).
To get this tourist visa, you must follow some guidelines. Here are some of the basic questions and answers when requesting this document:
How much does the tourist visa application cost?
Applicants for the B1 and B2 visa must pay US$ 160 to carry out this procedure.
What documents do I need to have to fill out the form?
The only document you must have will be a valid passport. But also, a visa photo that must be entered in the application on-line.
What size should the photo be?
The photograph should measure 2″ square (approximately 50mm square) with the head centered in the frame. The head (measured from the top of the hair to the end of the chin) should measure between 1 to 1 3/8″ (25 to 35 mm) with the eye level between 1 1/8 to 1 3/8″ (28 and 35 mm) from the background of the photo.
How long does it take to complete the online application?
Completing the DS-160 application takes approximately 90 minutes.
What data should be entered in the form DS-160?
In this form you must enter your personal data, travel itinerary, family information, education and work, among other points.
Where do I pay the consular fee for the visa application?
Payment of the US$ 160 must be made once you have completed the DS-160 form. The most common is to do it online by credit card or also by bank deposit in authorized entities.
When do I have the interview at the consulate?
To know this you must review the calendar and select an available date. There is no set time, but currently the earliest dates may be many months after the application is complete.
If my visa is approved, when will they give me the document printed in my passport?
If the visa is approved, it will be delivered via courier.
Can I get my money back if my visa application has been rejected?
The fee you paid is an application fee. Everyone applying for a US visa anywhere in the world must pay this fee, which covers the cost of processing your application.
This fee is non-refundable regardless of whether or not you were granted a visa, as your application has been processed to completion. For example, if your application was rejected under Section 214(b) and you choose to reapply for a visa, either at the same embassy or at another location, you will need to pay the visa application processing fee.
What is administrative procedure?
Some rejected visa applications may require additional administrative processing. When administrative processing is required, the consular officer will inform the applicant at the end of the interview.
The duration of the administrative processing will vary depending on the particular circumstances of each case.
I have a nonimmigrant visa that will expire soon and I would like to renew it. Do I need to go through the entire visa application process again?
Yes, you will have to go through the entire visa application process each time you want to apply for a visa, even if your visa is still valid. There are some situations where it may not be necessary to interview a visa applicant when renewing your visa.
After I get my visa, will I be able to freely enter the US?
A visa does not guarantee entry into the United States. A visa allows a foreign national to travel to the US port of entry, and the US Department of Homeland Security’s Customs and Border Protection (CBP) immigration inspector authorizes or denies admission to the United States. Also, it will tell you how long you can stay. (YO)
Source: Eluniverso

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