Well looks like we will now have the pleasure of paying to enter the US
The US has come up with a $10.00 entry fee for ALL 35 countries of the Visa waiver program. this means every time you visit the US you will be charged $10 entry fee so the US can promote tourism to the country since its way down over the past few years.
Maybe the EU will charge visiting Americans an equivalent fee. Not sure if charging visitors is the best way to promote tourism to the US. IMO reducing crime, keeping prices down even keeping the dollar down might be a more realistic way.