One more quote from the Washington Post story about John Roberts noted below:
In another development yesterday, Senate Judiciary Committee Chairman Arlen Specter (R-Pa.) sent Roberts a letter warning that lawmakers are angry about the Supreme Court’s denigration of Congress and by actions that have trimmed congressional powers. He said he plans to question Roberts closely about the issue in next month’s hearings.
In other words, how dare the Supreme Court tell Congress it can’t do something it wants to do. The Constitution be damned.