As I am sure you are aware there are many, many migrant workers in the Finger Lakes Region. They are part of the landscape, and on their time off they can often be found in local watering holes and businesses. They are delightful, and for the most part, they are legal. There is a legal process in place for them to obtain work visas.
In my area, Mennonites have taken on much of the seasonal farm work like grape tying and picking and so forth. But there aren't yet enough Mennonites for all the work to be done so the migrant worker is still a necessity.
All that is asked is that the migrant workers come in through the front door, the legal way, so as to allow U.S. Officials to control the numbers and insure that members of drug cartels, traffickers and human smugglers aren't sneaking in with them.