Vitter's Obamacare crusade draws GOP ire

Politico reports:

One fellow senator calls David Vitter’s years-long crusade to scrap health care subsidies for lawmakers and their staffers “disingenuous.” Another says it’s obviously being done “for political purposes.”

“I just don’t think he’s made a lot of progress on this issue,” a third senator says.

Exactly how are staff members of Congress part of a small business?