What do officers do to illegal immigrants in the present?
Take them into custody - where they are presented for a hearing. After that law enforcemtn has no further responsibility. Law enforcement agencies are part of the Executive Branch which does not become involved in the Judicial Branches operations or actions.
The government has passed laws to make it harder or easier for illegal immigrants to stay in the US?
Yes, illegal immigrants should be deported because they didn't have respect for the country they illegally entered. It is also an affront to any person who took the time and effort to enter legally. Send them back. They should at least have the respect to immigrate the right way. The illegal immigrants are breaking the "law". They shouldn't be here. Illegal immigrants don't pay taxes and our citizens have difficulties in getting jobs because of…
Legal immigrants are often not as impoverished as illegal immigrants, but are certainly not wealthy, the majority constituting the lower middle class and not ever becoming more than middle class. Most immigrants end up living simple lives in ethnic communities or in general society. Illegal immigrants tend to remain in the lower class because their illegality serves as an impediment to finding better work.
I am in no way condoning illegal immigration. However may agricultural and construction jobs hire illegal immigrants to have lower operating costs and to make more profits. You should note that it is against the law to be an illegal immigrant. Illegal immigrants use public resources such as food stamps and public housing. This may cause a US Citizen that is in need not be able to receive assistance.