It was a MASSIVE failure of leadership and / or govt in telling the military it could not defend the nation by defending the border and telling them they could NOT defend themselves....
When a foreign military approached US military troops and demanded the US military SURRENDER AND HAND OVER THEIR WEAPONS ... ON US SOIL ... AND THE MILITARY DID IT ... IT WAS A SAD F*ING DAY FOR THIS COUNTRY & THE US MILITARY!
The US troops should have immediately demanded the Mexican Military surrender and hand over THEIR weapons...and if they refused to do so the US troops should have LIT THEM UP!
I bet those Mexican troops are still telling their buddies the story of how they invaded the US and got the US military to surrender and hand over their weapons without a fight...and the Mexican military / their buddies are laughing their asses off...
You want to turn a misunderstanding into a shooting incident. You are the one who needs to be lit up.