From Think Progress:
Last week, House Oversight Chairman Henry Waxman (D-CA) revealed that the White House failed to preserve emails for at least 473 separate days. Waxman’s report said “Vice President Cheney’s office showed no electronic messages on 16 occasions from September 2003 to May 2005.” Among the sixteen days for which email are missing from Vice President Cheney’s office “is Sept. 30, 2003, the same day the day the Justice Department and the Federal Bureau of Investigation announced they were investigating who outed former CIA officer Valerie Plame Wilson.”
Yes, I think this is clearly the iceberg tip of a high crime and/or misdemeanor.