| ACKNOWLEDGEMENT | 第1-4页 |
| ABSTRACT | 第4-7页 |
| ILLUSTRATIONS | 第7-8页 |
| I. INTRODUCTION | 第8-9页 |
| II. WHO COMPOSE AMERICAN IMMIGRANTS | 第9-15页 |
| A. Immigration In History | 第9-13页 |
| 1 Immigrants before 1965 | 第10-12页 |
| 2 Immigration after 1965 | 第12-13页 |
| B. Controversy Over Immigration | 第13-15页 |
| III. IMMIGRANTS IN THE CHANGING ECONOMY OF THE UNITED STATES SINCE 1990 | 第15-46页 |
| A. Effects On the Labor Market | 第16-39页 |
| 1 Immigration and the Labor Market：An Economic model | 第16-18页 |
| 2 To what extent have immigrants contributed to American Economy? | 第18-26页 |
| 3 Education and Socioeconomic Status of Immigrants | 第26-28页 |
| 4 Do immigrants push native-born workers out of jobs? | 第28-32页 |
| 5 How do immigrants affect earnings/wages? | 第32-35页 |
| 6 Is there a decline of entrepreneurship? | 第35-39页 |
| B. Effects On the Public Sect | 第39-46页 |
| 1 More taxes paid or more welfare received? | 第39-41页 |
| 2 Immigrants more likely to be on welfare than natives? | 第41-45页 |
| 3 New laws restricting immigrants’eligibility for welfare? | 第45-46页 |
| IV. CASE STUDY OF CALIFORNIA’S ECONOMY IMPACTED BY IMMIGRATION | 第46-50页 |
| V. CONCLUSION | 第50-53页 |
| WORKS CITED | 第53-55页 |
