Scott talks to Tom Collina about the alarming plan to expand America's nuclear arsenal. The $2 trillion package, Collina explains, would include a large investment in what's known as the "nuclear sponge": a collection of ICBMs in America's heartland designed to draw a nuclear attack from America's enemies, rather than one targeted at Washington D.C. or other major cities. But this policy actually makes things far more dangerous, says Collina, since there's then tremendous pressure to fire these land-based ICBMs before they're struck. And if that strike turns out to be a false alarm, the U.S....