It's about time, made this recommendation a while back in a editorial-

we have a number of paid standing armies basically doing military exercises and playing games. From them we could make up a regiment etc with Border training to hold the line at a lower cost then the wall.

The wall is Ok but doesn't put fear in the heart of break & entry illegals - for that we need direct enforcement

It worked in the last LA riot when State & local couldn't or wouldn't quell the rioters and so on the fourth day of the savage mayhem, particularly against innocent Korea town, Pres. Clinton fearing a a greater lawless expansion into other cities, called in the Federal troops up from Camp Pendelton SD. When the boots hit the ground in LA & after warning stop or be shot, 3 rioters were killed and within 3 hours all hostilities stooped instantly. Enforcement makes the laws legal. It works......

The military are not allowed to shot or arrest anyone. They can only assist with clerical or other duties. This is only a show of force.