Texas Attorney General Ken Paxton (R) is examining the City of San Antonio's recent decision not to allow Chick-fil-A to open a location in the city's airport over the company's alleged anti-LGBT activities.

"The Constitution’s protection of religious liberty is somehow even better than Chick-fil-A’s chicken. Unfortunately, I have serious concerns that both are under assault at the San Antonio airport," Paxton wrote in a letter to the city's mayor and city council on Thursday.

"I have directed my office to open an investigation into whether the city’s action violates state law," he added.

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Paxton also urged Transportation Secretary Elaine Chao Elaine Lan ChaoChick-fil-A drops fight for San Antonio airport location Overnight Defense: US marks 19th anniversary of 9/11 attacks | Trump awards Medal of Honor to Army Ranger for hostage rescue mission | Bahrain, Israel normalizing diplomatic ties Trump marks 9/11 with moment of silence on Air Force One, remarks in PA MORE to investigate whether the city's action affects its federal grant eligibility on religious discrimination grounds.

The city council voted 6-4 last week to bar Chick-fil-A from opening a location at the San Antonio International Airport.

"With this decision, the City Council reaffirmed the work our city has done to become a champion of equality and inclusion,” Councilman Roberto C. Treviño told the San Antonio Current in a statement at the time. “San Antonio is a city full of compassion, and we don’t have room in our public facilities for a business with a legacy of anti-LGBTQ behavior.”

The Hill has reached out to the San Antonio City Council for comment.

The company's charitable foundation has frequently donated to Christian groups that oppose same-sex marriage or require commitments by members not to engage in LGBTQ activities.