It's important to note that. Perhaps it was an error. Just as sometimes a pitcher hits a batter by error. But sometimes a pitcher hits a batter on purpose, to send a message.
It was not an error, this happens too often, as it did when "W" was in office.
I personally witnessed a Mexican Huey complete with door gunner flying over U.S territory, where the Colorado River is the Border, there is no way to miss that from the air, or the ground. Fortunately there was no gunfire that time.
A few months later in broad daylight, a squad of Mexican Military was caught on the U.S. side of the Colorado River, when buzzed by a Border Patrol Helicopter, they laid their guns down, and put their hands in the air. Again the excuse was that they didn't know they were in the U.S. after crossing the Colorado River.
I can show you where the border is, where they crossed in the middle of the darkest night without a flashlight.
“Just as sometimes a pitcher hits a batter by error”
And sometimes someone crosses the border by accident and is put in the slammer for NO GOOD REASON.