Still...I've gotta put him in the "Forgive them, they know not what they do" category and go from there, in spite what he's doing.
The truth will come out...
I personally believe Jeff is motivated by either emotional or economic interest in the issue. The topic applies to someone near and dear to him or it is part of his job because he works for a political agency in which it is doctrinaire. It might be both.
The Republican party officials (currently dominated by the blue blood moneyed interests) long ago came out with a "let's embrace the foreigners" position, believing it will benefit themselves politically, and everyone in both Parties (Republican and Democrat) have adopted this as their official policy. The rank and file in their employee have since been following this party line, and I suspect Jeff is among them.
This is about political expediency, not truth. Not good policy. Only winning. For whatever reason, they think embracing the foreigner is a "winning" strategy.
We see this manifested lately in the "Amnesty" issue as well.