And the 2nd doesn't refer to him as being "back up" representative. It refers to the district he represents. Each state is divided into districts and each district has it's own representative in the House. Hawaii only has 2 districts, so it has 2 representatives. Bigger states like California probably have at least 20 representatives. So Case most likely spends just as much time as the other representative in DC.
***End of Government 101***
***End of Government 101***