The visa policy of the United States deals with the requirements which a foreign national wishing to enter the United States must meet to obtain a visa, which is a permit to travel to, enter, and remain in the United States. Visitors to the United States must obtain a visa from one of the United States diplomatic missions unless they come from one of the visa-exempt countries or Visa Waiver Program countries. The same rules apply to Puerto Rico and the United States Virgin Islands while different rules apply to Guam, Northern Mariana Islands and American Samoa.
A visa (from the Latin charta visa, meaning "paper that has been seen") is a conditional authorization granted by a country to a foreigner, allowing them to enter, remain within, or to leave that country. Visas typically include limits on the duration of the foreigner's stay, territory within the country they may enter, the dates they may enter, the number of permitted visits or an individual's right to work in the country in question. Visas are associated with the request for permission to enter a country and thus are, in some countries, distinct from actual formal permission for an alien to enter and remain in the country. In each instance, a visa is subject to entry permission by an immigration official at the time of actual entry, and can be revoked at any time. A visa most commonly takes the form of a sticker endorsed in the applicant's passport or other travel document.
This level of spoken English is meant for those people who can speak English well but not fluently. They are able to read and understand fairly well. The face difficulty in making sentences and often commits mistakes. This course involves usage of grammar, tenses, modals and verb forms. This course offers an easy understanding and development of the English language. This module offers a motivating variety of speaking tasks that enhances your speaking efficiently.