I don’t see why there is an issue with closing your borders to ALL IMMIGRATION, FOR AN INDEFINITE PERIOD OF TIME.
What is the big deal about doing this? Nobody is going to kill anyone - they just have to stay in whatever country they are in.
All immigration should be stopped until 1) the current bunch of immigrants is assimilated, 2) the illegals in the country have been dealt with, 3) the (real) unemployment rate is at an acceptable level.
Since when does a country have to be a dumping ground for every third-world hell-hole on the face of the earth?
The big deal is that Big Business wants it’s cheap labor used to Third World living standards.