Why did Denise Chung, head of the criminal division at the U.S. attorney's office in D.C., resign?

Denise Chung resigned because she refused to comply with an asset freeze order related to Biden administration grants handled by the Environmental Protection Agency. According to sources who spoke to NBC News, Chung believed the evidence did not support writing a letter to banks ordering them to freeze assets that were no longer in possession of the federal government. Chung essentially 'drew the line' based on ethical obligations, as there was a specific evidentiary threshold that needed to be met for such action. While she was willing to sign a letter recommending further investigation, she was unwilling to authorize the asset freeze without sufficient supporting evidence.