In the wake of the controversy over Delta Air Lines' end of an NRA discount for travel to the group's convention, the Atlanta-based airline said it is reviewing all discounts "of a politically divisive nature."

"While Delta's intent was to remain neutral, some elected officials in Georgia tied our decision to a pending jet fuel tax exemption, threatening to eliminate it unless we reversed course," Delta CEO Ed Bastian said in a Friday memo to employees obtained by The Atlanta Journal-Constitution. "Our decision was not made for economic gain and our values are not for sale. We are in the process of a review to end group discounts for any group of a politically divisive nature."

A Delta spokesman said only 13 tickets were sold under the group travel discount for the National Rifle Association.

"Our people and our customers have a wide range of views on how to increase safety in our schools and public places, and we are not taking sides. Our objective in removing any implied affiliation with the NRA was to remove Delta from this debate," Bastian wrote in the statement. He added that many employees have gotten questions from customers, and that he knows it is "not comfortable to be caught in a highly emotional debate."

Read the full memo from Delta’s CEO here:

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