If he drinks, you could try wine or spirits that are from the U.S. I see you are in Yonkers, you may even be able to find a nice wine from a NY state vineyard.
The rules for sending food from one country to another can get very messy, but if at all possible you could send some European chocolates or a gift basket of American treats (there are companies that sell the baskets already assembled).
This is not really a "guy thing", but if he likes candles, there may be something from Yankee Candle that is of interest. I bring this up because evergreen candles are a favorite of my brother-in-law
http://www.yankeecandle.com/cgi-bin/ycbvp/category.jsp?category=/Retail/Candles
I don't know much about your relationship with him. If its reasonably good, you may want to consider this. In my experience, in-laws are much like parents. They don't mind "things", and they will adore that you thought of them and put the time in to choosing a gift. However, most of them value personal things more....such as pictures of you and your wife, maybe a letter talking about the fun things you've done together, or times she has recounted his wisdom as you go through life together.
How about a book? If you go to a book store, I bet you could find a few coffee-table books with beautiful photos of New York or America. Most of these books are heavy on photos and light on text. If he doesn't speak English, he can still enjoy it...although...I bet he would enjoy it even more if you and your wife (or a friend that speaks his language) could add a few notes describing the scenery, or even a personal note if there are pictures of something that is important to you, even if it is somehting is simple is as "Do you see that building with the sign that says Sycamore? That is where I work".
Hopefully some other folks will have some good ideas too
