1. Who benefit from illegal immigration/immigrants? Are all immigrants considered cheap labor?

2. Who benefits most from the work/jobs provided by the illegal immigrants, and which U.S. workers lose out as a result of the added competition for those low-wage jobs?

3. Do we need more immigrants because of low U.S. birth rate? And why does America allow so many immigrants to come to the U.S.?

4. Are there any differences between the last century's immigration policies and today's immigration policies? What is the immigration trend in U.S?

5. What are the true costs and benefits of illegal immigration around the world?

Please include examples, charts/graphs, and all references and sources.