It’s’ called strategy. Why let them build up at the mex/ameri border while they keep trying to stop them when we can pop the whole zit in the south where the Caravans are originating.
Not sure how your post relates to mine of earlier nor exactly what this sentence means, but it seems possible you are confusing “tactics” with “strategy”
Consider these points, which is what JFF and I address:
Which is more important to the U.S. that the entry of illegal immigrants across Mexico's northern border is stopped, or the flow of entrants across Mexico's southern border is stopped?
Would it be of greater benefit to the U.S. if Mexico applies a larger amount of border control assets at its northern border rather than at its southern border?