WASHINGTON - Republican presidential candidate John McCain admitted on Saturday it can be difficult at times to be proud of the United States. “I’ll admit to you … that it’s tough in some respects,” McCain said when asked by a questioner at a town hall meeting how to be proud of the country. “We have not always done things right and we mismanaged the war in Iraq very badly for nearly four years.” McCain’s wife, Cindy, pounced on Michelle Obama, the wife of presumptive Democratic nominee Barack Obama, for saying in February that she was proud of her country “for...