The U.S. Court of Appeals for the D.C. Circuit in March upheld a lower-court finding that Congress can obtain grand jury materials in connection with impeachment proceedings — an exception to secrecy rules that typically prevent release of such evidence.
Last week, the Justice Department said the decisions created “serious separation-of-powers concerns” that demand the Supreme Court’s attention and asked that it put on hold release of the information until the court decides whether to get involved….