As a side-note it was the "dangerous communist leftist" Sanchez which swiftly took control of the situation and defended what was in effect an external EU border, while Melloni et al rubbed their hands and tried to score some cheap points while doing fuck all to help. Food for thought if you ask me...
Nobody knows exactly how many have come over, but there are estimated to be around 15 million illegal immigrants in the US, primarily via the southern border. For scale, the largest city in the US is NYC with about 8.5 million people. The 10th largest is Fort Worth, Texas with about 1 million. And that's after multiple waves of amnesty legalized millions more, which obviously did nothing but further incentivize more illegal immigration, exactly as in Spain.
[1] - https://www.washingtonpost.com/world/the_americas/unauthoriz...
[1] - https://archive.is/KruVX
There is nothing inhumane shooting at people trying to illegally cross your borders. You can mine the forest there, build some fences with sensors and stuff. Solutions exist, my question is why no one is implementing them?