I know Bishop Trinh had some de-facto ethnic chapels of Vietnamese who relocated from California here in Texas. Don't know the status of those chapels, because information on these chapels is kept to parishioners only, on a need-to-know basis.
Bp. Trinh follows the "keep a low profile, avoid the evil Communists" philosophy of priests like Blessed Miguel Pro, Bp. Zendejas, and Bp. Slupski (RIP).
What I'm trying to say is, I and the friendly Trads on CathInfo don't know anything about those chapels -- but the same goes for the government goons. They don't know anything either. It's a package deal, but Bp. Trinh (and others like him) are OK with that arrangement.