"There are expectations that go with it," Burr said. "The White House will not tell you what to do, but they aren't shy about calling and seeing how you are doing."
Read: They won't tell you what to do, but they will slyly suggest that you tow the party line once in office, even if it means selling out your own constituency
Burr has a 2002 ACU rating of 96 and a lifetime rating of 91.
Not as good as Helms was, but I doubt we'll ever see another one like him.
I'm waiting to see what they will give your favorite Senator next year. :)