Ask the Consul
How long is my B1/B2 visa valid?
The consular officer decides how long your visa will be valid (up to five years for a B-1/B-2 visa for a Colombian) and how many entries will be printed on the visa (normally the visa will be a "multiple-entry" visa, but in some cases the consular officer will limit the number of entries). If you receive, for example, a multiple-entry, five-year visa, it means that you may apply for admission to the United States as many times as you wish over the next five years. Likewise, if you receive a one-entry, three-month visa, it means that you may apply for admission to the United States one time over the next three months.
The validity of your visa and the number of entries are completely separate from how long you are allowed to stay in the United States. An immigration inspector from U.S. Customs and Border Protection of the Department of Homeland Security makes the decision as to whether or not to admit you to the United States and decides how long you may stay. In most cases the immigration inspector will admit you for a specific period of time (for example, six months). You must depart before your period of stay expires, and you cannot work. If you do not depart on time or if you work illegally, you may be subject to arrest and removal from the United States, and you may be ineligible to receive a visa in the future.