They could legally ban hoodies, as long as they phrased it as something generic, like non-religious head coverings, working off the old anti-KKK mask laws. And enhance penalties for committing any crime while wearing such a head covering.
The most recent US Supreme Court rejection of a challenge to a mask law, was once again from the KKK, in New York in 2004.
Though in past, Texas used to have an anti-mask law, at some point they rescinded the law. No reason to not bring it back, phrased in such a way as to include hoodies.
That is, Oklahoma, not Texas.
Anything alse you feel Muslims should benefit from at our expense?