Senator John McCain, the former Republican presidential candidate, returned to his home state of Arizona this week for a series of meetings about immigration with his constituents.
Mr McCain is a member of a species that was very rare in Washington until the last US presidential election, a Republican in favour of immigration reform. Now, there are many more Republican voices speaking out for reform in the US capital but in Arizona, as Mr McCain found out on Tuesday, Republicans and immigration reform are still an explosive combination.