It was ‘way back in 1984 when Arnold Schwarzenegger first uttered the movie catchwords “I’ll be back” in The Terminator. Today, Arnold is back. Sort of. Now, through his Terminate Gerrymandering Crowdpac, Schwarzenegger has committed to match donations to a fund that will help Common Cause participate in a case before the Supreme Court challenging maps drawn by Wisconsin Republicans. He’s into other things, as well.