1. MacBook Air 11-inch : 64GB in US is $999.
2. MacBook Air 11-inch : 64GB in France is €1,049
3. $1 = €0.80 at the current time.
So you might think the MacBook Air should be €800 (999 * 0.80). So why it is €249 more? France levies 19.6% TVA (sales tax) on goods and the tax is included in the display price; the US levies sales taxes by state and these are not shown in the displayed prices (sales tax calculated based on destination).
So, what you need to compare is the pre-tax price on both machine. The pre-tax price of the MacBook Air in France is €877. Thus Apple is charging €77 more for the MacBook Air in France than in the US.
The issue is tax rates not Apple.
If you look at the UK you'll find that
4. MacBook Air 11-inch : 64GB is £849
5. $1 = £0.65
So, the £ equivalent of the $999 machine is £650. UK VAT (sales tax) is 20% and thus the pre-tax price of the machine is £707. So Apple is charging £57 more in the UK than in the US.