Immigration is the intentional movement of people from one country to another, typically to a country they are not natives of. Common reasons for immigration include to avoid socio-political strife in the country of origin, for economic purposes such as employment.

The US government has set up a number of mechanisms to govern immigration into the country. These mechanisms are often revised to suit current times. Examples of these mechanisms include provision of proof of accommodation for certain individuals, assessment of one’s financial position and proof of the reason why they intend to come into the country.

The criteria determining which requirements one has to satisfy in order to be allowed into the country vary depending issues including their nationality and the reason for their visit. The correct paperwork has to be completed and filed for the immigration process to be quickly and efficiently processed. For this reason, it is advisable for individuals planning on visiting the United States to go through the list of requirements they need to fulfill, and then prepare the paperwork as soon as possible.

It is also advisable to file immigration paperwork well in advance of the planned trip in order to cover for inconveniences such as having to deal with rejected paperwork. US embassies in the country of origin, the US Citizenship and Immigration Services and other third parties such as immigration law firms provide technical information regarding the requirements one has to fulfil to be allowed in the country, to stay for longer or to gain citizenship.