Attorney General Jeff Sessions delivered a speech in Las Vegas last week pushing a policy point that has been a staple of President Donald Trump’s recent rhetoric: sanctuary cities -- municipalities or localities that prohibit local law enforcement from enforcing or cooperating with federal immigration law -- are a haven for undocumented immigrants and thus hotbeds for criminals and illegal activity that would otherwise be punished. Sessions even cited an academic study to prove his point.

July 17, 2017 ・ From Inside Higher Ed