Ambinder:
Alaska Gov. Sarah Palin was not subjected to a lengthy in-person background interview with the head of Sen. John McCain's vice presidential vetting team until last Wednesday in Arizona, the day before McCain asked her to be his running mate, and she did not disclose the fact that her 17-year-old daughter was pregnant until that meeting, two knowledgeable McCain officials acknowledged Tuesday.
Define "lengthy". Define "in-person". (Telephone interviews aren't good enough? Why not? This search is supposed to be done in at least partial secrecy.) And who are these "knowledgeable McCain officials"? Why are they remaining anonymous?
Assuming the sources are actually in the know and don't have axes to grind, all this proves is John McCain full well knew about Bristol's pregnancy. And he chose Governor Palin anyway. Which is what they've said all along.
Sorry. Despite what the breathless MSM that itself hadn't properly vetted Palin's alleged AIP membership and other "scandals" before running with them says, Palin was properly vetted.