How could Congress legitimately respond to President Obama's appointment of Rahm Emanuel as chief of staff?

The correct answer highlights that while members of Congress can express their opinions and concerns regarding presidential appointments, they do not have formal power to block an appointment of a chief of staff like Rahm Emanuel. The appointment of a chief of staff is made solely by the president and does not require Senate confirmation, unlike many other high-level appointments, such as cabinet members and federal judges.

Thus, while Congress members can publicly oppose the appointment through statements or resolutions to signal their discontent, this opposition does not translate into a legitimate legislative power to prevent Emanuel from taking the position. This underscores the presidential authority in choosing personal staff without legislative checks in this specific case.