There's always the amnesia defense. I find it incredibly scary that these are the people who were selected for their positions because they were highly qualified (i.e. "competent"), yet they have the memory spans of goldfish (random trivia - pregnant goldfish are called "twits"). How could these people be trusted to run the country when they all apparently suffer from Alzheimer's?
And I don't buy into the crap about this being a witch hunt. Accountability of the executive branch (or of the government at all) is NOT a witch hunt. Perhaps the apologists should stop attacking the people asking the questions and instead starting challenging those who were asked the questions to answer them fully and honestly. Perhaps every step this administration takes is looked upon with strict scrutiny because so many of the previous steps turned out to be deceptive. And perhaps, had this administration exercised its oversight somewhat more effectively in the six years of unquestioned governing, it wouldn't be subject to external oversight now.