Beginning Tuesday, emergency rules are now in place to allow THC retailers to sell cannabis products to adults over the age of 21. Greg Abbott issued an executive order earlier this month. "Texas laws set this legal drinking age at 21 mainly to meet federal highway funding requirements, not based on scientific evidence. Two weeks ago, Abbott signed an executive order largely legalizing and regulating THC, citing previous federal and state laws allowing Texans to grow and sell hemp. It ended, for now, a struggle with conservative members of the Texas Senate who wanted to ban all THC products.