One of the most popular pages on Alcademics is the Airline Liquor Regulations page. It rounds up the rules of what liquor you can pack in your luggage according to various airlines.
But no matter what the airlines say, you can't neccesarily transport the maximum amount of booze into every state in the US: your final destination matters.
Travel + Leisure magazine took to the 'what you can pack' rules in their April 2013 issue. Here's what they had to say about it.
Anything less than a liter is generally permitted duty-free. Thanks to the 21rst Amendment, it's up to each state to determine how much alcohol you can carry. Most states limit you to a "reasonable" amount for personal use. If you're from a control state, however, check with the local alcohol board to see if there are restrictions. Utah, for example, sets a two-liter limit. For the record: absinthe (anything bearing the brand name Absinthe, containing thujone, or decorated with artwork "project[ing] images of hallucinogenic, psychotropic, or mind-altering effects") is not allowed in the States.
They don't say it in the above description, but the absinthe for sale in the US is perfectly valid and can contain thujone, up to a legal limit (that they deem legally negligible).
Most airlines allow you to pack unlimited wine/beer in your luggage, and up to 5 liters of hard alcohol. That said, anything over a certain proof is not permitted. Check out the Airline Liquor Regulations page to see what you can pack in your luggage, at least according to the airlines.