Those considered as a potential vice president undergo a thorough examination . The intense vetting is necessary because a presidential pick is a candidate 's first big decision . John McCain 's campaign chief said he asked questions he ` ` would not dream of '' any other time . Candidates being vetted undergo scrutiny of almost every facet of their life .
Those considered as a potential vice president face a thorough examination . The intense vetting is necessary because a VP pick represents a candidate 's first big decision . John McCain 's vetting chief said he asked questions he `` would not dream of '' any other time . Candidates being vetted face scrutiny of almost every facet of their life .