TThe United States is a federal republic consisting of 50 states. Executive power rests with the President, and Congress consists of the Senate and the House of Representatives. The United States is famous for its democratic system and a society governed by the rule of law. The United States is one of the world's largest economies and has a highly developed market economy. The country has diverse economic sectors, including finance, technology, manufacturing, agriculture, and services. At the same time, the United States is a multiracial and multicultural country that attracts immigrants from all over the world. Its education is famous for its high standards and ranks among the best in the world. Among the world's top 500 universities, the United States accounts for 168 universities. With a large number of immigrants from all over the world, it is one of the most ethnically and culturally diverse countries in the world. There are full range of social benefits, such as pensions, elderly benefits, medical insurance, etc.
The immigration policy of the United States is relatively complex and changeable. It offers different types of immigrant visas, and applicants need to meet specific eligibility criteria and pass certain checking procedures. The immigration pathways are as follows:
