Democratic lawmakers on Capitol Hill say local police who do not enforce gun control measures likely to pass in Virginia should face prosecution and even threats of the National Guard. After November's Virginia Legislature elections that led to Democrats taking control of both chambers, the gun control legislation proposed by some Democrats moved forward, including universal background checks, an “assault weapons” ban, and a red flag law. Legal firearm owners in the state, however, joined with their sheriffs to form Second Amendment sanctuary counties, which declare the authorities in these municipalities uphold the Second Amendment in the face of any...