The US Visa Waiver Program allows Belgian citizens to travel to the US for short journeys of 90 days maximum without having to obtain visa. The US are now introducing a newElectronic System for Travel Authorization (ESTA).
From August 1st 2008, travellers to the US can apply on a voluntary basis, via the Internet, for ESTA-authorisation. From 12 januari 2009 all travellers from Visa Waiver countries will be required to obtain this authorisation before travelling to the US.