Trump's orders to have a bunch of violent idiots shake assault rifles at the empty desert from the other side of a financially unfeasible wall he plundered the military budget to put up a limited section of didn't do shit. The price tag on that was astronomical and it wouldn't stop the four legged variety of coyote let alone an actual criminal that isn't a blind drunk amateur. People made a game of scaling that joke with no equipment. And building a wall to Trump's dementedly unrealistic fantasy of a coast-to-coast 60 foot tall spike covered burning hot jet black fortress straight out of Mordor with a complementary moat filled with snakes and crocodiles - that's not me exaggerating for comedic effect, that was a real thing he wanted - not only would cost billions annually to maintain but it still wouldn't dent the problem. The main source of illegal immigrants is those who overstayed a legal entry. The main solution would be more bureaucratic in nature: contact with case workers, liability for sponsors of work visas, etc.
And those "training" sessions? That mockery of riot response is laughably inapplicable to the job for multiple reasons, not the least of which being that border runners aren't a mob crashing through the front doors like Trump supporters on Capitol Hill and the miles of empty terrain along the border aren't a closed urban environment that heavy gear and advancing wall marching tactics are designed for... To say nothing of how completely out of touch it is with the actual daily routine of border patrol. If you had tanks rolling up from Mexico like your rhetoric is meant to equate incoming refugees to it would still be completely inappropriate to the situation and utterly ineffectual. The whole spectacle was merely a "keep out" sign and an attempt to communicate that the fair image America sells to the world is disingenuous without having to come out and actually say it.
Your rhetoric is a poor mask for the simple truth. The people you actually fear head for legal ports of entry thinking there's paperwork waiting for them and a heavy burden of proof if claiming asylum which doesn't actually require legal entry because of the very nature of the claim, which is that they are in immediate peril should they remain in their country. According to the law - which they aren't breaking - that's exactly what they should have been met with. As repeatedly demonstrated the law don't mean jack diddly dingleberries to you.