A team of House and Senate Democrats have introduced legislation that would block research, development, production and deployment of low-yield nuclear warheads for submarine-launched ballistic missiles on the grounds that such weapons risk entering the United States into a nuclear war. House Armed Services Committee Ranking Member Adam Smith (D-WA), Reps. Ted Lieu (D-CA), John Garamendi (D-CA), Earl Blumenauer (D-OR) and Sen. Ed Markey (D-MA) have introduced the bill, known as the Hold the LYNE -- or Low-Yield Nuclear Explosive...