denied entry to US

I received my ATT last March and ill be probably taking my NCLEX at Nevada this May. I am leaving for the US this 1st week of April. I hope somebody could share their experience especially recent Foreign Nurses who went to the US to take the Nclex by using their visa. There were rumors going around that some nurses who went to the US as tourist never made out of the LAX because the department of homeland security saw their records or something and identified them that they were going to take the NCLEX in the US. Speculation was that the DHS knew because of the finger print cards record that we submitted upon application of our ATT (probably reflected on their pc when they entered the tourist record at the DHS counter). I try not to think about it but i know some of you guys esp filipino nurses who just arrived in the states knew what is at stake if youve been denied entry. Thank you