No, he's not crazy like a fox:
“The president’s behavior this past month or so can best be understood as him trying to return to his brand as an angry outsider,” Drezner wrote. “He needs to ensure that his loyal base supporters are sufficiently energized to come out and vote GOP in the midterms. An easy way for him to do that is through Twitter rants.”
He really is just that stupid:
“We are going to be guarding our border with our military. That’s a big step,” he told reporters before accusing President Barack Obama making “changes that basically created no border.”
The caravan in Mexico is making him "very sad." Why is he sad? Because we're not a country of laws, we're a country of no laws:
“The Mexican border is very unprotected by our laws,” the president insisted. “We have horrible and very unsafe laws in the United States. And we’re going to be able to do something about that hopefully soon, Congress will get their act together and create some very powerful laws like Mexico has and like Canada has and almost all countries have.”Ironically we do have laws, and some of those laws say you can't use the U.S. military this way:
“We don’t have laws,” Trump complained. “We have catch and release. Catch and then you immediately release and people come back years later for a court case, except they almost never come back. So we are preparing for the military to secure our border between Mexico and the United States.”
The primary restriction on military participation in civilian law enforcement activities is the Posse Comitatus Act (PCA).21 The PCA prohibits the use of the Army and Air Force to execute the domestic laws of the United States except where expressly authorized by the Constitution or Congress. The PCA has been further applied to the Navy and Marine Corps by legislative and administrative supplements. For example, 10 U.S.C. Section 375 directs the Secretary of Defense to promulgate regulations forbidding the direct participation “by a member of the Army, Navy, Air Force, or Marines in a search, seizure, arrest, or other similar activity” during support activities to civilian law enforcement agencies. DOD issued Directive 5525.5, which outlines its policies and procedures for supporting federal, state, and local LEAs. DOD Directive 5525.5 prohibits the following forms of direct assistance: (1) interdiction of a vehicle, vessel, aircraft, or other similar activity; (2) a search or seizure; (3) an arrest, apprehension, stop and frisk, or similar activity; and (4) use of military personnel in the pursuit of individuals, or as undercover agents, informants, investigators, or interrogators. It is generally accepted that the PCA does not apply to the actions of the National Guard when not in federal service.22 As a matter of policy, however National Guard regulations stipulate that its personnel are not, except for exigent circumstances or as otherwise authorized, to participate directly in the arrest or search of suspects or the general public.
Yes, there are subtle distinctions about what the military can and can't do; but what Trump envisions is simply illegal. I'm sure it's Obama's fault, even though the Posse Comitatus Act was passed in 1878. But the caravans are coming; except Mexico broke them up in Mexico; but still the caravans are coming, because we have no laws, thanks to Obama. Well, that's what he said!