adelaarsvaren,
What you say applies to B visa holders as well, not just to VWP people.
Nicely done by your wife, very nicely done. The best evidence of all is the individual and how they conduct and express themself. And I particularly like the way that your wife observed the CBP officers and based her choice of line on their conduct.
Yodrak
QUOTE(adelaarsvaren @ Dec 19 2006, 04:58 PM)

This is a tricky one...
For Visa Waiver citizens, it appears to not be illegal, but is at the discretion of the officer at the POE. My wife, who is French, flew CDG --> Heathrow, Heathrow --> Seattle this past Sunday. 2 hours after the plane landed, and the baggage from the flight was no longer in Baggage claim, I was about to cry, when she came out of the arrivals area... Immigration asked her "What are you doing in the USA?" She said "visiting my husband" they said "does he live here?" She said yes. They asked, why don't you live here, she said "Because I am still working in Paris". He said "welcome to the USA".....
Now, my wife said she picked the guy who seemed to be scruitinizing people less, and she was the last person in line outside of the plane's crew, so perhaps he was ready to get finished....
Best of luck!