Protecting borders is an entirely appropriate use of military.
Protecting the Borders of the United States Is THE appropriate use of military.
pretty basic and the left doesn’t get it. We can also send the military in places to defend our people or our interests.
https://www.law.cornell.edu/uscode/text/10/3062
(a) It is the intent of Congress to provide an Army that is capable, in conjunction with the other armed forces, of—
(1) preserving the peace and security, and providing for the defense, of the United States, the Commonwealths and possessions, and any areas occupied by the United States;
(2) supporting the national policies;
(3) implementing the national objectives; and
(4) overcoming any nations responsible for aggressive acts that imperil the peace and security of the United States.