Then we need to replace our political and military leaders.
A bunch of disorganized citizen volunteers at the border will not be effective. The invasion force is organized and sustained by full-time paid professionals who know what they are doing. And the have the backing of the Mexican Government and the Narco-Cartels to enforce what they are doing.
This will require bloodshed to stop and it would be best to be on the Mexican side of the border. Only our regular Army has enough power to do that. Our political leaders clearly do not have the will to do that.
This will require arrests and criminal prosecution of the backers and funders of this invasion force, to the extent they can be found in the United States. Our political leaders clearly do not have the will to do that.
This will require economic sanctions against Mexico, to include tariffs, remittance taxes, and arbitrary border closures. Our political leaders clearly do not have the will to do that (though we are hearing a lot of harsh talk from them on that subject).
This will require forcible deportations of thousands of people who are presently inside this country giving support to the invaders. Our political leaders clearly do not have the will to do that (too many illegals are already voting)
You have no idea about how effective a large contingent of well-armed, pissed-off Americans will be (the majority of whom will likely be hunters and expert marksmen) at stopping these turds from crossing onto our soil.
Since you have aptly stated the unwillingness of our leaders to do anything effective, and since this emergency is happening now and thus “electing new leaders” is not a practical solution to the PRESENT NATIONAL EMERGENCY, that automatically puts the ball in our court. If our leaders lack the resolve to stop these invaders, then it is our moral duty to stand in the breech.
Trump's not a politician. Congress has no say in criminal prosecutions for violations of federal law.