There are only 2 million unemployed Americans right now. Most of the illegal immigrants have jobs and fill in the gaps, such as working on farms and factories. If the 20 million illegal immigrants are deported, want that create a massive laborer shortage? Won’t the work follow the workers to Mexico?
Fun fact, depending on the year surveyed, in several states the top most common position held by immigrants are Nurse.
And they work hard while being exploited and underpaid by corporate hospitals that dangle citizenship in front of them.