The Immigration laws of a country are extremely important for its growth. Countries like the United States gained a reputation as the land of immigrants, as its population grew from 2.2 million in 1850 to 14.2 million in 1930. This is because of the amount of opportunity provided by the country for a larger number of people who chose to leave behind their various nations and travel to the U.S. to reap the benefits.

Over a period of time this high percentage of immigration dropped as many countries implemented immigration laws. Most of these laws allowed a set percentage of people into the country and created a quota system. This was done to protect the current inhabitants and to avoid overpopulating major cities.

The United States also known as the Melting Pot has drawn over a million immigrants each year since 2000. Mexicans are the highest number of immigrants in the United States followed by the Chinese, the Indians and Filipinos. 

The problem now faced by the US is that though it has allowed a vast number of legal immigrants each year, it still has to cater to the existing 11.9 million immigrants living in the country. This is the reason why immigration laws have become a contentious subject on the political agenda.