Yeah, and OBTW, in case ANYONE is interested, it is also a CONSTITUTIONAL MANDATE on the feds.
The United States shall guarantee to every State in this Union a Republican Form of Government, and shall protect each of them against Invasion
U.S. Const., Art IV, Sec 4.
Illegal immigration and immigration of our enemies is INVASION.
What that means is not only what you said, but also that the Left and a lot of those supposedly on the Right in Congress are committing basic treason by opposing the wall which facilitates this constitutional mandate.
Why Trump's advisers and small army of legal counsel don't get him on board with that, I'll never know.
Actually I do know. Law school no longer teaches the Constitution as written and originally understood and intended even though the Constitution is the Supreme Law of the Land (Art. 6, Cl 2). So likely his Legal Counsel is brainwashed and doesn't get the limitations and mandates on the feds via the Constitution.
As my tagline says, we need to RESTORE the Gospel of the Grace of Christ so hearts and minds are changed, so in turn our Free Constitutional Republic is restored. Only by God's grace will it happen.
God bless.