White House immigration adviser takes legal strategy role Ramzi Kassem, a former senior adviser on immigration and civil rights in the Biden White House, becomes Mamdani's chief counsel. The appointment, announced December 30, 2025, positions a federal immigration and rights expert in the mayor's inner circle as NYC confronts Trump administration pressures on sanctuary city policies. Biden White House Background Kassem served as a senior adviser in the White House on immigration policy, advising on asylum, border security, and immigrant rights. He has also worked extensively on civil liberties issues and Muslim community protection from government targeting. His background combines policy expertise with civil rights advocacy. Chief Counsel Role The chief counsel position provides direct legal advice to the mayor on policy, strategy, and litigation. Kassem will coordinate legal strategy on anticipated conflicts with the Trump administration over sanctuary city policies, immigrant protections, and civil rights. He will also advise…