While you're there, you have the legal right to download any European public domain works, just like you have the right to buy them from a bookstore, and, were you so inclined, walk into a copy shop & make copies. Or print out copies & sell them.
Public domain is not based on one's residence; it's a matter of location.
If you wanted to play target/guinea pig, you could:
1) Download 500 European-not-USan public domain ebooks,
2) Burn the whole set to a hundred CDs,
3) Bring CDs back to the US,
4) Sell CD's for $5 each,
5) Wait for lawsuit.
Because while you're allowed to, for example, buy a public domain book in a bookstore for 1/4 the price it sells for in the US, and bring it back and sell it at a markup (so far; there's a lawsuit in the works that's poking at this idea), this hasn't really been tested with ebooks, where most of the advantage is in instant/online copies, not hardcopy-for-sale.