Your alternative is to shoot them at the border, or film them while they drown at sea... and even that wouldn't work as well as you might hope. Just wait and see what the next few decades hold, it's going to make this recent wave of migration seem absolutely delightful by comparison.
We've made the implicit choice to live our lives in such a way that the AGW is going to make the places like Northern Africa utterly unlivable, and then we'll blame people for fleeing from it.
It's the typical tragicomedy of a species that has a collective memory of about 20 seconds.
To the degree Africa is unlivable it's because of Africans and their high birthrate (but most of it is not unlivable at all, it's just that Europe is richer and you get free everything).
Either the EU closes its borders or immigration will be the end of Europe. Don't pretend you don't understand this.
I can understand the desire to feel like you have something in your control though, when the reality is so very different.
This just in... Europe is quite a bit larger than Israel, and composed of different sovereign nations.
It's just gong to happen to you, because life isn't fair.
If you want to stop the migration we're going to see in the coming decades, it won't be war, but wholesale slaughter. Frankly, that conflicts too strongly with our view of ourselves as good people.
Besides, war with whom? Tens of millions of people fleeing their homes? Are you going to go to war with migrants, or maybe you think bombing their homes a bit more will make them less likely to leave?
If you're American, your original comment was referring to the US immigration policy? That would make that original comment seriously misguided.
As to the basic point however that you can somehow vote someone into power who's going to change the reality of how the world is turning out... ha. Ha ha. Unless you're voting for someone who's literally talking about shooting people at the border and letting them drown at sea, you're falling for someone's lies because you desperately want to believe them.
Then I'd ask why you're so desperate to believe them.