The next time I hear a "Constitutionalist" demanding border/"immigration" control from the feds, I'm going to use their go-to spiel against them.
They always say they are "not against immigration, just illegal immigration; immigrants need to do it legally, in accordance with the law".
OK.
So I'm going to say "I'm not against immigration control, just illegal immigration control; if they do it, they need to do it legally, in accordance with the Constitution-- they have to follow the process and pass a constitutional amendment making immigration control legal so they aren't breaking the law when they try to control the border and regulate immigration".
The same tactic could be used against anti-gun legislation, prohibition, or the existence of any of the "Alphabet soup" agencies. You want it, shut it down immediately-- within the hour-- then try to pass a constitutional amendment making it legal (to take effect in six months or a year after ratification, like they do with any liberty-enhancing legislation); one issue/agency per amendment, no blanket "all the agencies we have been operating up until now" nonsense-- or dissolve it permanently and give away any related agency's assets to the people it has harmed.
Of course, I actually am against "immigration" control and government borders and documents that establish a state and don't expire once all the original consenting parties are dead. I'm just trying to illustrate the silliness of their argument.
You can decide for yourself whether you feel it was wise or foolish to not include the power of "immigration"/border control in the Constitution, but that doesn't change the fact that it isn't allowed by the document.
I'm also against government punishing people for defending their private property from trespassers of any kind-- including legislation enforcers and migrants. That includes the use of armed patrols, drones, and booby traps (all at the property owner's expense, of course).
It's fun to watch the Constitutionalists' brains reboot-- something I've caused more than once over the years (even though the virus of statism always manages to reassert itself and erase any memory of the reboot-- it's like they have a "restore point" in their brains so as to avoid any new settings).