What do businessmen Warren Buffett and Bill Marriott; entertainers Paul Simon and Bob Dylan, Supreme Court Justices Ruth Bader Ginsburg, Stephen Breyer, and Anthony Kennedy, plus 14 US Senators — including John McCain and Bernie Sanders — have in common? They are all working past the age of 75.

And yet the Oregon Constitution requires all judges to retire at the end of the calendar year in which they turn 75.