I am always within the letter of the law.
The problem is people see something they don't like and the first cry is, "The government should do something. Make a law."
I say let the market work. If you do not like how a business operates, DON'T PATRONIZE IT!!!
No law will have a greater affect than that.
With 5.5 billion people in the world poorer than Mexicans there is for all practical purposes an infinite supply of labor in the world that would dearly love to be paid the American minimum wage. If we don't put some restrictions on our labor market we will all be living like the little kids in India I watched on Fox News the other night who were 7 years old and working 18 hours per day in sweatshops for 35 cents per week.
I am not about to wait and let the market work that kind of magic here. There are not enough jobs in the world to employee all these people at a wage that lets them live with an American style of living and there likely never will be. The only chance America has to keep our standard of living high is to make sure that the supply of labor here is always tight. A high standard of living is closely tied to high productivity. Agriculture needs to quit whining about cheap labor and figure out how to automate. In your industry the thinking has already been done by the Australians.
I am in favor though of dramatically simplifying the law for you and getting rid of all that I9 and discrimination crapola. Maybe we can agree on that. It should be as simple as if you don't have a social security card that can be quickly verified against a database by magnetic reader or on-line or by phone it is illegal to hire you. If an employer gets caught with an illegal employee, the employer incurs a massive fine and the person who made the hiring decision does some jail time. No exceptions and the penalties get worse for repeat offense.