Question: What scandal resulted in an investigation into the real estate investments of the Clintons and McDougals that also influenced Roger Altman's employment situation at that time?
Sentence (from "Roger Altman"): He served as Assistant Secretary of the Treasury in the Carter administration from January 1977 until January 1981 and as Deputy Secretary of the Treasury in the Clinton administration from January 1993 until he resigned in August 1994, amid the Whitewater controversy.
Relevant evidence: Yes