[Melchizedek]

Controlling the border is no problem at all. It's only a matter of will - just look at Israel.

[M_Grey]

So it only takes massive support from a superpower, being a tiny nation, building an actual wall and manning it, and spending an absolute fortune on defending it? http://www.haaretz.com/israel-news/business/israel-shells-ou...

This just in... Europe is quite a bit larger than Israel, and composed of different sovereign nations.