An elder American absent mindedly arrived at French customs at Paris airport and fumbled for his passport.  "You have been to France before Monsieur?", the customs officer asked  sarcastically.

The ancient Yank admitted that he had been to France before.

"Then you should know enough to have your passport ready for inspection", snapped the irate official.

The American said that the last time he came to France he did not have to  show his passport.

"Impossible, old man. You Americans always have to show your passports  on arrival in France."

The old American gave the Frenchman a long hard look.

"I assure you, young man, that when I came ashore on Omaha Beach in Normandy on D Day in 1944, there was no Frenchman on the beach asking
to see my passport!"