We have no way to know if this is going to end with massive shootouts at borders. The political costs of "just build makeshift camps, keep them fed and out of sights, eventually send them to another country, and let most people ignore them" is still lower than "handle a viral video of your army massively shooting migrants".
https://www.texastribune.org/2023/01/19/national-guard-migra...
https://www.npr.org/2023/04/22/1171450334/two-men-shot-at-a-...
In Europe it's not shooting, but the treatments are called "bordering on torture" (by pro-migrants ONG, naturelle) https://www.liberation.fr/international/europe/une-violence-...
We have no way to know if this is going to end with massive shootouts at borders. The political costs of "just build makeshift camps, keep them fed and out of sights, eventually send them to another country, and let most people ignore them" is still lower than "handle a viral video of your army massively shooting migrants".