In the Peter Navarro case, executive privilege is on trial

Does Congress have the power to compel presidents and their advisors to disregard executive privilege and force testimony before its committees? That’s just one of the substantial constitutional questions raised in United States v. Peter K. Navarro; the Supreme Court gets its first look at the case on April 26.

U.S. v. Navarro has the potential to be a landmark case of “first impressions” involving unsettled questions ideal for Supreme Court review. Peter Navarro is the first White House...