Denise Cheung, head of the criminal division in the U.S. Attorney's Office for the District of Columbia, resigned on February 18, 2025, following directives from Trump administration officials to initiate a criminal investigation into a $20 billion climate-related contract awarded during President Joe Biden's tenure. Cheung, a 24-year veteran of the Department of Justice, cited insufficient evidence to support such an investigation and expressed concerns over potential political motivations behind the directive.