McCain speaks in York, PA (16 images)

Presumptive Republican presidential candidate Sen. John McCain's (R-AZ) campaign bus arrives at the York Expo Center for a town hall meeting in York, Pennsylvania on August 12, 2008. (UPI Photo/Kevin Dietsch)

Presumptive Republican presidential candidate Sen. John McCain (R-AZ) (L) and Sen. Joe Lieberman (I-CT) arrives at the York Expo center aboard McCain's campaign bus for a town hall meeting in York, Pennsylvania on August 12, 2008. (UPI Photo/Kevin Dietsch)

Sen. Joe Lieberman (I-CT) (R) introduces presumptive Republican presidential candidate Sen. John McCain (R-AZ) (L) at a town hall meeting in York, Pennsylvania on August 12, 2008. (UPI Photo/Kevin Dietsch)

Sen. Joe Lieberman (I-CT) introduces presumptive Republican presidential candidate Sen. John McCain (R-AZ) at a town hall meeting in York, Pennsylvania on August 12, 2008. (UPI Photo/Kevin Dietsch)