There are clear borders between the EU and non-EU states.
Muslim scum came in, and headed for Germany. Other states said no
it would be like illegal Hondurans heading to New York but they first have to get past the border in Texas -- so you stiffen up the border in Texas, build the wall there, not between Texas and Ok etc.
we all already know how well the EU-non-EU border is working out between Greece and Turkey, aren’t we?
I mean it is not as if any illegal aliens are pelting truck drivers in Calais with rocks or trying to hitch unwanted rides. or invade chunnels. Never fear, the EU to the rescue!
And how much migration has been effectively slowed to a mere dribble on the Mexico-El Salvador-Honduras borders, saving us in the USA to build higher walls, yes?
also see this:
I view a big part of the remainer uncertainty as being due to the November agreement mandated porous border between Ireland and GB and the demonstrated resolve of the wildcard Ireland government to screw GB by any means available.