Yes it is. It was made legal a couple of years ago. Before that you could order it over the internet and have it delivered. It was legal to own, but not to sell in the USA. Now they can sell it in the USA but it's still hard to find good absinthe.
I like two brands that are very good. One is Une Emile 68. It's a French absinthe and is very tasty and a good mixing of wormwood and anise.
The second brand is Clandestine. It's a blue absinthe from a Swiss maker.
There are others but these are the two I like from the ones I have tried.
I have also tried La Tormente (sp?), Lucid, and a couple of others I can't remember the names of. Stay away from the Spanish, German and Checz brands. They are usually high amounts of alcohol with a little wormwood (not always) and anise flavor. So anise flavored vodka is what they really are. Use the French method of prepairing the absinthe and stay away from the Checz method as setting the absinthe on fire burns off the alcohol and ruins the flavor of the absinthe.
Use ice cold water slowly dripped into the absinthe and it will come out very tasty.
I order mine from a place in the UK called Liquor's De France. They guarantee it will be delivered. They have a great selection. If you look in your local liquor store you might happen across a bottle. Here in my state the liquor stores must buy their items from the state and this limits any good absinthe from being sold. So if I want the really good brands I have to buy from the net and pay a lot more for shipping.
I only do this once in a few years.
Sorry for taking this off topic, but here is the URL of Liquor's De France.
http://www.absintheonline.com/