This is why the US needs to tame down the current immigration levels. Massive immigration causes traffic congestion, which would cause the quality of roads to decline faster. Also, the rapid increase has strained America's beleaguered schools, which literally don't have room for all these students. In addition, massive immigration would further tighten the supply of affordable housing for purchase or rent. Furthermore, there would be an increased demand for water, electricity, and other public services. Most importantly, there would be increased competition for jobs. Scaling back legal migration and cracking down on illegal immigration would ensure an improved quality of life for current US citizens.