The United State's immigration policy has undergone great change since the turn of the 20th century. Many things have contributed to this change, such as political problems, poverty, lack of jobs, and in fact our changing policy. The countries affected by these problems may have changed but the problems themselves have not. No matter what the location or time period, people have been driven from their homeland as result of political disputes. There will always be poor, 3rd world countries that can not create a prosperous environment for their people. As a result of general poverty, few jobs are available, which forces citizens to look beyond the borders for work. Our changing immigration policy is motivation for some immigrants to come to America. If the U.S. is accepting a high number of one country's immigrants, than many of their citizens will emigrate for America, some legally and others illegally. The United State's has changed its immigration policy many times in the last 100 years but the reasons for resettlement have remained generally the same. The early 1900s was a period of mass immigration for the United States. At the turn of the 20th century religious preferences and political persecution were major reasons behind immigration. Many Jews came to America in search of freedom. People of other religious backgrounds also came because the United States was composed of a diverse group of people with different religious preferences. The immigrants did not feel like outcasts in America. Political persecution in Russia forced many of its citizens to emigrate. Most chose to come to America because the country was culturally diverse and they could feel safe there. Economic problems at this time also drove people to America. Many countries around the world were just starting to develop so they were poor and lacked jobs. Their citizens were in desperate need of money; so many fathers immigrated to America in search of a job to support their family with.