“The restaurant, bar or club in question changes the policy when they know they are violating the law,” he said.

Amardeep Singh said he called CPD to confirm the existence of the no-hats policy.

“The gentleman I talked to was clear in saying there was no such Cambridge-wide policy,” Amardeep Singh said. “The Hong Kong is doing this of their own volition.”

Amardeep Singh said that he sent a letter to the Kong management on Monday and is awaiting a response.

“Now it’s up to them to absorb it,” Amardeep Singh said. “If things don’t work out we’ll pursue other legal options, whether through a state commission or through the federal government or a lawsuit on our own. We’ll just have to see.”

Deeptej Singh said that he hopes the issue is resolved “amicably.”

—Staff writer Hana R. Alberts can be reached at alberts@fas.harvard.edu.