The first woman cited had a Hispanic name. It is highly inappropriate in that culture for him to do what he did, although mostly acceptable in standard American culture if they know the person and if like Biden are known to be rather affectionate in a non sexual way with those they know.
Check out the Creepy Uncle Joe videos and look at the ones with the little girls.
There is _no_ culture where feeling up little girls is acceptable behavior (well, outside of California, that is :-) )