While it's worth giving attention to this, keep in mind that there's absolutely nothing new about the US denying entry to foreigners on political grounds:

For decades people who were members of foreign political parties deemed "too left wing", were often routinely denied all kinds of visas, for example.

What exactly the US government considers thought-crimes worthy of visa refusals have changed over the years, but the use of visa refusals as a tool to restrict access to government critical foreigners has been a constant.