English as an official language

A debate has been taking place in the U.S.A. about whether English should be an official language or not. Some people say yes and some, expecially advocacy groups for non English speakers, say no. This is clear to me for many reasons of which I will list a few that address economic issues, questions of assimilation into a new Motherland and problems with illegal immigration as well.
First of all, there would be a huge economic benefit on both sides. Not only do bilingual people get paid more, but also the goverment would get better control over the black market for employment, because these people would have a better chance to get a legal job. When one gets paid more, his family doesn't have to live in poverty. When they don't live in poverty, the goverment doesn't have to spend so much money for welfare benefits. That money can be reinvested into the educational system.
In addition to my first argument, people who don't speak English at all are often, but not always, illegal immigrants. These people can live anonymously their entire life in the U.S. and even local authorities know nothing about them. That's not what the federal goverment needs now when the country is in "the war". The United States has always been open to people from all over the world, but currently illegal immigration is becoming a problem. It is estimated that there are 10 to 20 million illegal immigrats already residing in this country with additional 2 million of them coming in each next year. Make them learn English, because under that circumstance at least they will have to enroll in a language school and come out of anonymity.
Last but not least, it is supposed that someone who chooses the U.S. as his new country accepts its, laws, rules and of cource language. According to a survey, 78% of Russians and 64% of Chinese speak English, but only 50% of Mexicans do. Let them keep their native languages, culture, social and family traditions in their communities, but they aren't supposed to exclude themselves from all of American society. Didn't these immigrants get a chance for a better life here? They might appreciate that by learning its language. They should show their respect for their new Motherland. As the first immigrants from Italy, Russia and Germany learned English, new immigrants should do the same.
In conclusion, I don't see anything wrong or even racist about requesting that English be the official language. The U.S. gives many people chances to try to live an American dream which is not easy to accomplish, but the first and the most important step towards that dream is to speak English.

This is my essay written for my TOEFL class at my school.