You missed his words on the Vegas attacker. They were swift.

Immigration here was always set up to be immigrants who added to our country, skills, lifestyles, whse culture aligned with our American culture and English speaking was a critical role there.

Refugees were established for those people who were being persecuted and killed. That included refugees from the Middle East-it began with a focus on rescuing Christians and bringing them here. I know one such family from Iran...but they are not 'white'-

So this " who speak English and are Christian" makes sense.