A number of global law firms, including Davis Polk & Wardwell and Kirkland & Ellis, are challenging a series of changes proposed by the Law Society of Hong Kong that could restrict the practice of foreign lawyers, warning that they could result in “colossal negative repercussions” for Hong Kong.

The group, which also includes Latham & Watkins, Paul Hastings, Skadden, Arps, Slate, Meagher & Flom, and Linklaters, signed a letter to Law Society president Melissa Pang warning that the proposed changes will have “colossal negative repercussions for the economy of Hong Kong and for Hong Kong’s status as an international financial center,” according to local newspaper the South China Morning Post.