A Chicago alderman, angered by the president of Chick-fil-A's comments that he is against gay marriage, said he will block the company from building a restaurant in his ward.

Alderman Joe Moreno said Wednesday that unless the company comes up with a written anti-discrimination policy, Chick-fil-A will not open its first free-standing restaurant in the city as it plans to do.

"They have nothing on the books that says they do not discriminate and they are open to everyone," said Moreno, whose ward is on the northwest side. "I want to see that policy before they go forward."