Find the topic of CET-4 English composition "Immigration".

Immigrants made America what it is today. In fact, if there were no immigrants, there would be no America, because everyone in this country is an immigrant or a direct descendant of an immigrant. Even the oldest inhabitants, Native Americans, immigrated from Asia. The rest of us come from all over the world. Britain, Ireland, Italy, Mexico, China, Germany and many other countries have contributed to the population of the United States. Immigration began with the establishment of our country, and since then, there have been immigrants every year. With the integration of people with other Americans, every wave of immigration has brought new ideas and cultures. Immigration is absolutely necessary, but if it is not controlled, it will also have a devastating impact on the country's economy and population. Therefore, immigration is only good, if it is a limited immigration. I think the current immigration policy in this country is controlled and a good one.

Controlled immigration can have a positive impact on the economy. They pay taxes and start businesses to raise the gross national product. Ho tmail was founded by an immigrant from India with only $200. His company has undoubtedly had a positive impact on the American economy. The most comprehensive immigration study completed by the National Research Council found that immigrants provided the United States with an overall moderate net income. Every year, about 7 billion to10 billion dollars of income comes from immigrants, which is an economy of 8 trillion dollars. According to the report, in states with a large number of immigrants, especially California, some local governments feel financial pressure, because these families are more likely to have school-age children, rely on social services and pay lower taxes than local residents. But overall, the results are positive.

If immigration is not controlled, it will destroy the country's economy. Because many immigrants who enter this country have nothing but clothes, it costs billions of dollars just to keep them alive. Uncontrolled immigration will be the end of ordinary middle-class families today. Immigrants will flood into the labor force without any pay, forcing middle-class workers to lose their jobs and fall into poverty. We will see our beautiful country slide into the kingdom of third world countries.

Immigration should not be completely stopped. We have a lot to thank immigrants for. Immigrants from China built transcontinental railways, which linked our country by connecting East and West. Many people have become scientists or engineers, and have created countless ideas and invented ions to make our life better. It is morally right to allow some immigrants to enter our country. Many people flocked to the American coast to escape the oppression and persecution of cruel dictators and governments. For those who have no chance to live in their own country, the United States has become their safe haven. For example, many Vietnamese who came to the United States in the1970s were trying to escape the deadly control of the communist party administration. Many people also come from or try to come from Cuba. There, the communist government led by Fidel Castro did not allow any freedom and killed anyone who opposed his policies. We have undoubtedly done a good thing by opening our borders to desperate foreigners seeking basic human rights.

Immigration is indeed a policy beneficial to our country. Without it, we wouldn't be America today. But like many other good things, too much is not good. If left unchecked, immigration may become a heavy burden on our economy. However, a certain number of immigrants have proved to have a positive impact on China's economy. There is no doubt that controlling immigration is a feasible way.