There are two ascendant forces in today’s Democratic Party: socialism and the embrace of unfettered immigration. We have seen them come together in the primary victory of Alexandria Ocasio-Cortez over Rep. Joe Crowley, D-N.Y. What happens when they collide?

Sen. Bernie Sanders, I-Vt., found out the hard way this week. Sanders, the toast of the progressive wing of the Democratic Party during his presidential primary campaign against Hillary Clinton in 2016, was practically disowned for stopping just short of endorsing the elimination of Immigration and Customs Enforcement.