The worst thing the EU ever did was to introduce an open border law as far as people were concerned it allowed an influx of people to cross into France once they manage to get into EU territory.
Nothing will change as long as there are people willing to risk their lives to cross the Channel and as long as there are money grabbing gangs to help them. The French government give the impression they could do a lot more to stop the unlawful dangerous boats leaving their waters and shore line but that costs more money than they are willing to spend.
Radical thought.
As the governments past and present only seem to provide lip service to processing these hopeful immigrants, maybe it is time to set up a kind of enclosed camp to hold them full of various workshops so they are virtually self sufficient.