Did your mommy tell you that?
The protection of the American people from the invasion of foreign military rests squarely with the President of The United States.
He should have the U.S. Military on the border, not some retired volunteers.
The actual fighting is a military responsibility, certainly. The problem is that Washington will not admit this is happening. Nor will the MSM. Time for citizens to go out and bring back evidence of incursions to media sources that will listen: Drudge, et. al.
One potential source of hard information on this could be...amateur astronomers! They go out into the Arizona desert, to border sites like Vekol Valley, Sentinel, and Organ Pipe, armed with sophisticated camera gear and portable telescopes, looking for the darkest places. Now are dark-sky border places not the very routes illegals might also favor?
Intelligence is found in unexpected places.