GILBERT - Arizona Sen. John McCain held a town hall in Gilbert this morning and the economy took center stage. The town hall was focused on the nations' economic troubles and McCain said the on-going financial problems would be much greater had Congress not passed a bill to keep the country from defaulting on its debt. McCain said he is very concerned with the recent S&P downgrade of the United States' credit rating and views it as a wake-up call to the nation. "It will cost more to borrow money and it is a very serious situation," McCain said. McCain...