McCain says Palin thoroughly checked

US Republican presidential candidate John McCain he is satisfied that Sarah Palin's background was properly checked before the Alaska governor became his vice-presidential running-mate, he said Tuesday night. "The vetting process was completely thorough and I'm grateful for the results," McCain told reporters as he toured a Philadelphia fire house. Questions about the review came up after news surfaced that Palin's unmarried teenage daughter, Bristol, is pregnant, and that the Alaska governor had retained a private attorney to represent her in an investigation into the firing of the state public safety commissioner. Arthur B. Culvahouse Jr, the lawyer who conducted the background review, said Palin voluntarily told McCain's campaign about Bristol's' pregnancy, and about her husband's two-decade-old DUI arrest during questioning as part of the vice presidential search process.