That depends on what you call "banned". In Maryland, the rules you have to satisfy in order to sell/buy bleach with a concentration of higher than 8% are sufficiently restrictive that almost no one sells it to non-commercial purchasers. There are ways to get 10% or 12.5%, but they are impractical for almost all home owners. Speaking conversationally, it would be reasonable to say that liquid chlorine was banned in Maryland, even though that is not technically true.
