I'm going to have to ask you to be more detail specific and back up that claim. Name those laws and detail exactly how they are unenforceable, unworkable, unrealistic, and unreasonable.
And then explain how we are supposed to enforce the guest worker program if our current laws are unenforceable. The guest worker program only makes it more complex.
If we can enforce the guest worker program then we have displayed that we can enforce current immigration laws.
Enforceable, workable, realistic and reasonable laws dont work when they not enforced. Hence our illegal immigration problem.