invoked it during bill clinton's impeachment proceedings 15 years ago. has it already been 15 years? >> as i come here with some sense of reluctance, the president and i have been close friends for 25 years. we even crashed a twin engine beech bonanza trying to get to the gillett coon supper, a political event that won at his own risk. and we crashed this plane on a snowy evening in a rural airport. off the runway, sailing out across the snow jumped out, j jumped up, and ran away unscathed. to the dismay of every politician in arkansas.