In the case of Vidya Iyer, I doubt there would be any Immigration Inspector that would not allow her stay up to 6 months if that is what she wanted to do.
Anyone that criticizes this rule for the above reasons, has not read or understood the rule.
Know if you wish to criticize the rule, this is how you criticize it:
These people go to the US Embassy or Consulate in there home country, file out an application for a visa, get interviewed and have a background investigation done on them.
So for the most part we know who these people are.
Mow consider the Visa Waiver Program (VWP).
Citizens of the following countries: Andorra, Australia, Austria, Belgium Brunei, Denmark, Finland, France, Germany, Iceland, Ireland, Italy, Japan, Liechtenstein, Luxembourg, Monaco, the Netherlands, New Zealand, Norway, Portugal, San Marino, Singapore, Slovenia, Spain, Sweden, Switzerland, the United Kingdom and Uruguay may travel visa free under the VWP.
No interview or background investigation. They just show up with there passport and they get 90 days. Of course there are a few restrictions but basically they are free to come and visit the US for 90 days.
Food for Thought.