Calais Jungle

I cannot understand why there is so much concern at the threat being made by some in France to tear up the Le Touquet Agreement which allows the U.K. to have border checks in France. The thousands camped in the so called Jungle outside Calais are not genuine asylum seekers. If they were genuinely fleeing persecution in fear of their lives they would seek asylum in the first safe country they reached and indeed that is what the rules require. They are economic migrants seeking a better life and who can blame them for that. I think we should tell the French that if they change the current arrangements all those arriving from France will be immediately deported back to France and they will not be allowed to make asylum claims in the UK. The Calais Jungle is a problem for France and France should deal with it.