How about a line of these Sentry Guns from the ALIEN movie along the border
Actually (CMIIW) I believe he has the authority to deploy the Marines to the border to intercept the invading force.
They have openly documented their intent to illegally enter the U.S.
They need a nice little meet `n greet at their crossing point.
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How about a line of these Sentry Guns from the ALIEN movie along the border