If you wanted a bill to require that an actual fence be built, you would write a bill that required that an actual fence be built, with real consequences if that doesn’t happen.

If you want to write a bill that won’t result in a fence being built, you will give discretion to the DHS as to “where” it should be built, in what form–and, implicitly, where it shouldn’t be built. You will require only a ”plan.”

If you want to write a bill that won’t result in a fence being built but that might con conservatives into thinking it will be, you will throw in lots of meaningless references to possible ”double layer fencing” even though DHS might not decide to build even a foot of that kind of fencing (and none is mandated).

That’s what Rubio and his gang have written.