I'll go one further.Until American consumers understand the true cost of doing business,you won't curb the flow of illegals.
Let's say you want or need a retaining wall built.I come in(I own a landscaping company) and give you a bid.Mr.Illegal Hirer comes in a underbids me by 35%.Who are you going to hire to do the work?Be honest with yourselves.You're going to hire the lower priced bid almost 90% of the time,unless I was referred to you by someone you trust.Even then,you may go with the lower price.
Mr.Illegal Hirer doesn't pay unemployment insurance,half his employees SSI,a decent wage,or workmans comp.,so he can throw out a very attractive bid for the same work.
"Let's say you want or need a retaining wall built.I come in(I own a landscaping company) and give you a bid.Mr.Illegal Hirer comes in a underbids me by 35%.Who are you going to hire to do the work?"
That's why increasing the minimum wage should also be called the "Illegal Alien full employment act". Illegals are - well, illegal - and will break minimum wage laws leaving our own low skilled workers unemployed.
Have you tried explaining those features to your customers and their benefits (ie, no worries about lawsuits should one of the workers injure themselves on the customers property)?
Ask them if they like gambling that way.