Actually, what you -said- is that light beer is lower than 5%. Which, you're right in that sentiment because of the way it's brewed, but unless it's state regulated to 3.2%, then your average light beer is gonna be around 4 - 4.5% ABV. Still less than a regular, full-strength beer, but it's done mainly due to the way they make it to take out calories and carbs rather than what a state puts a limit on.
And, to kind of edit what I said before about beer laws, in Arizona, you can sell beer & liquor together (they have wine rooms & liquor cabinets in the grocery stores & and gas stations), but in Texas, the laws go by what county you live in - like Bowee County (where I lived), New Boston, Texarkana (TX side), and other towns in the area are completely dry. Restaurants in Texarkana can serve alcohol and there is 1 Mexican place in New Boston that serves it, but you can't go into a store and by anything alcoholic. You either have to drive to Oklahoma - which just over the state line, has a lower ABV, or go on the Arkansas side of State Line Road in Texarakana.
However in other parts of Texas, you can buy wine and liquor in the grocery stores.
Liquor laws are weird. Especially living in the Bible Belt. *dies*