"A seat in Congress isn’t a permanent position."?
For just too many, yes, it betrays that tendency, which—as was so in FDR's reign—has much to do with the "why" of term-limit legislation; upon taking office and in the fullest use of new-found power, the politician begins arranging things for re-election, . . .
Lugar is 80? If in the very least, for him and Byrd, for all practical considerations, the seat has been permanent, . . .