[cpdiii]

Can Europe not repel this unwanted home invasion from the Global South?

A wall
Razor Wire
Bullets
and if all else fails, landmines

Those that arrive by boat should be towed back to their point of origin and the craft sunk once they are off.

[meadsjn]

Those that arrive by boat should be towed back to their point of origin and the craft sunk once they are off.

That is too extreme. Halfway is sufficient.