How has Immigration helped the U.S?
If you want the long answer, immigration literally helped populate the US and develope it. The Native American population suffered as a result of this. Nonetheless, the US has achieved many things in its history. Economics, science, military power, the arts, and education grew and developed in part due to the various immigrants who came here. Modern immigration has gotten controversial due to problems with illegal immigration and the threat of terrorism.
origionally immigration helped establish this country. we all came from immigrants except for the native americans, so you could use that point, immigrants established this country as a haven for those persecuted for their religion, or due to harsh times in their native country. Modern immigrants, legal, bring us doctors, specialists, and we would be noting without the chinese restaurants ran by chinese immigrants.