@spaf
John Barrasso (R-WO) is an orthopedic surgeon. Thomas Massie is a mechanical engineer. Charles Boustanay (R-LA) is a heart surgeon. John Boozman (R-AR) is an optometrist. Rand Paul (R-KY) is an ophthalmologist. Dave McCormick (R-PA) is a MechE with a PhD in international relations.

That's not an exhaustive list, either. Don't dismiss them as crayon-eaters. "If you know your enemy..."