You have to find a happy medium.
Japan made the conscious decision to keep immigration to a minimum, and automate rather than import low-skilled workers.
The US OTOH imported millions of low-skilled workers rather than make investments in automation such as advanced farm equipment.
At least Japan’s decision kept the country Japanese.
We’ve balkanized the US perhaps beyond repair.
That is why Tokyo, largest city in the world, has never had a Muslim terrorist attack.
While the West says oh, get used to it, you can’t stop it, it is part of modern life.