Sen. John Tester (Tester/Flickr); Sen. Steve Daines (White House photo/Tia Dufour) and Sen. John Barasso, R-Wyo. (Flickr/Gage Skidmore)
Meet the Senate nuke caucus, busting the budget and making the world less safe

These lawmakers represent states with a direct interest in pouring billions into modernizing and building new weapons.