'No-charge zone' approved in basketball

[Texas Aggie]

So is there an included definition of "secondary?" If a dribbler is out around the 3 point line, closely guarded, then blows by his defender with another defender switching on him around, say, the FT line, if the defender is still playing good defense but gets fouled under the basket, is it a no-call? Also, how much "under the basket" does a defender need to be? Partially? Fully? Just in the area?

If an offensive player can't drive to the hoop without contacting someone under the basket, that defender, is, by definition, playing defense. Its no worse defense than a defender near the division line guarding but not closely guarding a player. Why doesn't the offense get a free shot on this guy?

Totally stupid rule.