"Wartime ROE" is what every sane nation AT WAR employs. You announce loudly and clearly that from now on, "runners" will be stopped, one way or the other. The current Keystone Kops system says, "speed fast on the highway, and we'll drop pursuit" and so on. This encourages the coyotes to take wild risks on the highways, driving backwards against traffic at 100MPH on the shoulder is one such trick. They know the BPs rules are to let them go. This actually leads to MORE deaths.
A firm set of rules will cause coyotes to quit, since their chances of success will drop to near zero. Fewer will die of thirst in the desert, becuase almost nobody will TRY to cross the desert, when they know the risk of aprehension is 99%.
This is what SANE countries do in WARTIME, when terrorists are known to be trying to sneak into your country.
As I have said numerous times on this thread, therei s no public mandate to stop runners "one way or the other." Most americans don't want to see nice Mexican folks dying on the border.
Things have to change before they do.