OK. You say illegal immigration is not OK, please tell me the reason(s) you believe this.
The present immigration laws don't reflect economic reality. We aren't allowing enough legal laborers to enter. The results is an unmanageable illegal workforce that isn't good for anyone involved.
There is nothing good about the entire system. Employers suffer, employees suffer, the CBP is obstructed from performing its priority mission of preventing terrorists from entering.
We can't stop the laborers and no one wants to shut down the businesses that pay the taxes and also employ citizens.
No solution is without its faults, but the present system must be reformed.