Until 1965, United States of America was one of most complicated nations for immigration. With the introduction of Immigration and Nationality Act of 1965, United States of America gradually emerged as a country with highest immigrant populations and also is one of the most visited countries on the earth. United States has made migration an easier concept by introducing 30 different types of visas for various purposes like business visa, athletic tour or pursuing an international course. According to the annual visa reports of 2014, during a year nearly ten million visas were issued by the United States of America to those seeking to enter the country.
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