Find a way to shut down the factory-farms and other corporations that hire illegal aliens.

Instead of building walls to keep people from spewing into America in search of jobs, we need to stop and punish Americans who knowingly hire immigrantes who are not here legally. If the jobs were not available, the immigrants wouldn't flood into America to fill them. This should be a simple process. When you hire someone to do a job, they should have the appropriate documentation. SSN, driver license, etc. It is NOT that hard. Punish the people who hire illegal aliens. This does NOT mean stopping Hispanic people on the street and asking for documentation. This means stopping employers from hiring people who do not have valid identification.