This is not factually wrong, though.
The border is not "open", so no, it's not.
Open, or just underenforced (a matter of semantics), but the fact is that massive amounts of deadly synthetic opioids are indeed crossing the border from Mexico.
That’s not semantics those are different things entirely. France and Germany don’t have an “under enforced” border. Either you don’t know what an open border is or you’re being intentionally dramatic
When Republicans and/or right-wingers say “open borders” nowadays, what they really mean is: “We don’t want non-white immigrants coming into this country.”