Brussels, 18/07/2007 (Agence Europe) - US citizens could one day have to get an electronic visa before travelling to Europe. The EU could consider such a mechanism, given the Bush administration's wish to introduce the “Electronic Travel Authority” (ETA), based on the Australian model, which would allow US authorities to require passengers to provide, 48 hours before embarkation, any personal information deemed useful to Homeland Security, and to decide if a foreigner should be permitted...