This point was addressed in his prior blog post (same day):
>> [...] Are Trump’s temporary immigration plans chaotic? Yes. Do they hurt innocent people who were minding their own business? Yes, temporarily at least. Did he scare the pants off of half the country? Yes. Will there be lots of unintended damage from Trump’s immigration orders? Yes. No honest person should deny the cost component of the equation. It’s ugly. But don’t stop with a half-pinion. If you want a full opinion on immigration you have to compare those costs to the potential benefits that include fewer terrorist acts and avoiding Europe’s refugee problems. Are people making that comparison? >> >> No. [...]
- http://blog.dilbert.com/post/156532225711/the-persuasion-fil...
The first post is much better than its followup.
I appreciate Scott Adams' take because he provides a deeper reason for why the candidate/president does what he does.