Hall and Oates have decided to cancel a concert in Arizona in protest of the state's immigration laws:

The Arizona Diamondbacks announced that Daryl Hall and John Oates have canceled their post-game concert at Chase Field that had been scheduled to follow a game against the Dodgers on July 2.
Hall and Oates issued the following statement:
"In addition to our personal convictions, we are standing in solidarity with the music community in our boycott of performing in Arizona at this time. We would like to emphasize that this has nothing to do with the management of the Arizona Diamondbacks, who have been professional and cooperative throughout our dealings with them. This is our response to a very specific action of the state."

I'm just worried that politics might come between these guys again: