What does not stand up to scrutiny is a general “immigration is bad” thing. Immigration is great if you allow people who are willing and able to contribute to your country in, and implement some measures to help them integrate into your country so they can make a life for themselves and start being productive members as quickly and efficiently as possible. Then it works, and when it works it can work very well.
But that itself, choosing who can and cannot get in, who can/will be a productive new member of your society is border control. Basically you have to control the entry so that you can give your systems and infrastructure and society the time and opportunity to gradually develop along.
What does not stand up to scrutiny is a general “immigration is bad” thing. Immigration is great if you allow people who are willing and able to contribute to your country in, and implement some measures to help them integrate into your country so they can make a life for themselves and start being productive members as quickly and efficiently as possible. Then it works, and when it works it can work very well.
But that itself, choosing who can and cannot get in, who can/will be a productive new member of your society is border control. Basically you have to control the entry so that you can give your systems and infrastructure and society the time and opportunity to gradually develop along.