We face an entirely different scenario. The Trump administration is using an aggressive removal policy to terrorise as a primary tool, dumping people into inhuman conditions in collaborating countries without them being given any legal protection. Something the Courts are now reversing.
We could do the same, only we don’t have any convenient dumping grounds and we do follow the law. If Reform tried these tactics there would be uproar. Not just here but from our neighbours and partners. We aren’t the USA, able to act with distain and prepared, for now, to ignore world opinion.
That though is only part of the difference. The USA has a land border with Mexico. It can suspend its asylum policy at will and refuse entry, and return any that evade border controls but get captured. Mexico can do nothing to stop this. They are powerless.
We have a sea border with France, which is the primary problem. The USA doesn’t. We cannot just send the boats back to France. Unlike Mexico, France isn’t powerless.
Illegals arriving by air who destroy their documents on arrival present a different problem. One for which improved biometrics prior to boarding could solve.