The Texas Legislature has advanced a bill to prevent the government from penalizing businesses for exercising their religious rights.

The Federal Aviation Administration (FAA) is investigating two airports — San Antonio International and Buffalo Niagara International — over religious discrimination complaints, following the exclusion of Chick-fil-a from the premises, Fox News confirmed on Friday.

“The Department of Transportation has received complaints alleging discrimination by two airport operators against a private company due to the expression of the owner’s religious beliefs,” the agency said in a statement provided to Fox News.