Ok, so allowing people isn't the problem. It is very cruel in how it separates families, skilled workers come to the US but have an unstable future, it is too hard to get H1B for example even when you are in demand. Once they get h1b if they work a few years and are valuable to the company and US economy they should get permanent residency. Same with top scoring students that manage to land US based jobs as well people who immigrate on a business Visa (they should get H1B after working in the US for a while).

There should be strict enforcement of immigration laws at the southern border. It is not fair for other immigranrs if you bypass the whole process and just walk in. No need foe cruelty, just a lifetime ban on working or engaging in commerce as well as a ban from the immigration process entirely (you will never become an american). If they have children or give birth on US soil the restricrion still applies to the children but instead of deportation you move them to restricted border settlements where they are given a few years to migrate back. Aiding illegal migration should be a felony as well but migrating itseld should not be a crime.

If you become an american then your family should easily get a green card and come over as well.

You should also know basic english and able to contribute to the US economy before you are allowed to migrate regardless of sponsorship.

It really needs an overhaul to meet the needs and realities of today.