DON'T WORRY BRO...SAME THING HAPPEND ME IN  JAN, 2012  I KNEW I WAS SUPPOSE TO GIVE THAT I-94 AT LONDON AIRPORT ..I WAS ALSO SO SCARED..TYO PANI WHILE RETURNING...MY POE WAS IN BOSTON I GAVE MY PASSPORT WITH I-94 ATTACH ON IT..THAT OFFICER TOOK OUT THAT I-94 AND KEPT ON SIDE...I SAW THERE WERE 4-5 MORE I-94 ON SIDE(MAY BE THAT WAS OTHER'S I-94)...AND OFFICER GAVE ME NEW I-94....I'M NOT GOOD AT KNOWING LAW...I'M SURE THAT'S NOT CRIME...SO YOU SHOULD BE FINE LIKE ME...ENJOY IN NEPAL...AAFU TA DHERAI PANI BASNA PAYENA