Any guest worker program will include, first and foremost, those already here, since they know the jobs. It would make no sense to exclude them.
LOL, yep, it's really difficult to train dishwashers, housekeepers, groundskeepers,waiters, ect..
Currently, there are hundreds of millions of folks around the world that could do all the jobs the criminal aliens are doing and they have never broken our laws.
Your argument is a fallacy. Just say your for amnesty and be done with it.