I live in Unites States myself but i think this is completly justified.
Parents did not carry all the needed documents to enter india. We people living here in america /or proper americans have the tendency to take things for granted.
I bet if the same thing had happned to someone entering united states, in India, people would have praised about how strict the US laws are and how great the system is and how difficult it is not to for you to not follow rules. america is a great country.
World should know India matters and India can not be taken for granted!!!