at this point i'm just trying to understand better what your proposed change to the system is. AFAICT, it's:

1. remove CBP's current right to summarily deny entry to visa holders (which is to say, remove that right from the aggregate of current US residents)

2. require the CBP (and thus current US residents) to argue all cases of entry denial at a trial in a court of law (after the visa holder has been granted free entry to the US)

3. expand the visa holder's right to include an inviolable guarantee to enter at the time of arrival (which might, in some cases, be revoked in the future, but only as the result of a court trial)

4. (possibly also, though I'm not sure you'd agree) provide government subsidized lawyers to all visa holders who may face a trial questioning their right to remain