Jeffrey A. Rosen is the deputy attorney general of the United States Thanks to sensible law enforcement policies, violent crime rates dropped by half nationwide over the past three decades. Although increases occurred in 2015-2016, the rates again dropped during the first two years of the Trump administration. But reductions in crime are neither automatic nor inevitable. They are the result of federal, state and local law enforcement and prosecutors working together to enforce the laws. Unfortunately, a trend is emerging that could threaten the hard-fought progress in public safety. A small but troubling number of state and local prosecutors...
