Ok - I run a charity that makes is easier for illegal migrants to find housing and avoid deportation. This is illegal - should VISA cut me off?
Is that in fact illegal?
How is that illegal? Illegal immigrants may be in the country illegally, but that doesn't mean that everything they do while in the country is also illegal. We don't have outlawry anymore. Such concepts don't work in the modern world.
It's the difference between selling a bag of rice to a killer for hire, and selling a gun to a killer for hire.