@maporsche,
maporsche wrote:How does allowing immigration destroy the country?
Immigration and/or migration in, out, and around can be beneficial and detrimental in various ways.
From the perspective of people bringing and spending money, migration stimulates that for better and worse. It can cause GDP growth but also inflation.
From the perspective of people bringing fresh cultural input and perspective, it can be beneficial and detrimental as well. Diversity is good, but often newcomers to an area just conform to majoritarian behaviors in the area. So, for example, if you are trying to grow alternative transportation, newcomers may just ignore that because the majority of people drive in an area so they just want to drive instead of committing to a relatively marginal form of transportation that reduces congestion and that is better for environment and sustainability.
The main problem with migration is not with migrants themselves but only with the trafficking of human slaves/drug-containers, and drugs. If traffickers can camouflage their couriers within large numbers of legitimate and/or illegitimate travelers, it makes it easier to ship illegal drugs and provide services that citizens with normal employment rights are less likely to agree to.
Some have been insisting that most drug trafficking occurs through legal points of entry, but those discovered shipments could simply be a decoy to distract border police away from other trafficking that occurs in other ways. It is unfortunate that traffickers and high-paying drug consumers collaborate to use human bodies and couriers and containers for recreational drugs, but border control is at least one tool that can be used to intervene in this exploitative/abusive industry.