A Fort Bend County Republican has introduced a bill that would bar cities from adopting or enforcing non-discrimination ordinances that include protected classes not contained in state law. Texas law doesn’t include sexual orientation or gender identity and expression.

As a result, state Rep. Rick Miller’s House Bill 1556 would undo LGBT protections passed by numerous cities, including Austin, Dallas, San Antonio, El Paso, Fort Worth, Houston and Plano. Altogether more than 7.5 million Texas are covered by such ordinances.

“HB 1556 will prevent local governments from expanding business regulations beyond limitations established in state law,” Miller told the Observer. “Competing and inconsistent local ordinances interfere with economic liberty and discourage business expansion. By promoting instead of restricting business growth, this bill is about job creation and an improved state economy, both of which have a direct, positive impact on Texas citizens.

“Because every private business is different, nothing in the bill prevents local businesses from voluntarily adopting their own discrimination policy not currently included in state law,” he added.

Rep. Miller’s son, Beau Miller, an openly gay 41-year-old Houston attorney, is an HIV and LGBT activist. Miller said he was “extremely disappointed” to learn about his father’s bill.

“If the bill progresses through the Legislature, I’m sure there will be a robust conversation about the impact not only on minority communities, such as the LGBT community, but also on local rule in Texas,” Beau Miller said. He also posted a response to the bill on Facebook.

HB 1556 is more specific than a similar measure introduced by Sen. Don Huffines (R-Dallas). Huffines’ SB 343 would bar cities from enforcing any ordinances that are more stringent than state law, unless otherwise authorized by statute.

Here’s how Miller’s bill reads:

Four Collin County lawmakers previously said they planned to introduce a bill similar to Miller’s in response to the passage of the Equal Rights Ordinance in Plano.

Miller’s proposal is also similar to a bill passed recently in Arkansas. The only other state with a similar law is Tennessee.