One that is defined by these members and Obama dinner companions:
John McCain, Lindsey Graham, Kelly Ayotte, Bob Corker, Ron Johnson, Tom Coburn, John Hoeven, Dan Coats, Richard Burr, and Mike Johanns.
Or one defined by these Paul filibuster supporters:
Rand Paul, Mike Lee, Ted Cruz, Jerry Moran, Marco Rubio, John Cornyn, John Barrasso, John Thune, and Mitch McConnell.
Or perhaps it will be the overlap:
Saxby Chambliss and Pat Toomey.