Absinthe was legalized in 2007. There are limits on the amount of Thujone allowed in the US. Grande Wormwood is the ingredient credited with the purported effects of absinthe. Pre-ban absinthes have been analyzed and found to contain levels of thujone that would have been legal under current limits. I have read that sage contains more thujone than absinthe.
In the US, absinthes must have less than 10ppm (equal to 10 mg/kg).