The Brits should block the Chunnel until France gets their immigration under control.
Napoleon would never have put up with this—Heck even Napoleon III wouldn’t have stood by while this sort of stuff goes on—France clean up your act least a man on a white horse comes forward to do the job you will not do.
Absolutely
They do the next best thing, while British border control is flawed, the Channel provides them room for error a very daunting natural barrier.
France has river and mountain barriers but they surrendered control of its own frontiers to the EU. EU nations to the south and east passed on illegal immigrants to France. The British have refused to accept them, so they pile up in Calais. France should round them up, screen them by their own standards then deport or resettle them.
Instead, they blame the British, build fences and kick the can down the road.