President Donald Trump’s decision to send the National Guard to Washington, D.C., should be welcomed not just as an essential step to fight crime in our nation’s capital, but also as a salvo against the social malaise that afflicts urban America. 

Many of our cities now face an existential crisis. Declining tax bases, overwhelmed social services, rampant homelessness and drug use, soaring crime, and shrinking populations have pushed them to the brink. The massive influx of immigrants — in which the Biden administration was deeply complicit — has only worsened the crisis.