The BBC News site has an article Anger as father ejected from US about a man and his family going to Alanta on the day of the increase security fears.  When he landed in Atlanta, he was questioned for four hours.  They let his family stay but make him go back.  Here are several clips from the article:

“The whole experience was completely demeaning. One of them even said sarcastically ‘we didn’t tell you to come to America on holiday’ after we complained about our treatment.

“They went through all the suitcases including the children’s belongings before telling me I was being sent back because I needed a visa despite having a British passport.”