And yes, the administration eventually had to exempt green cards, and yes, the courts struck down that version of the ban. But the point is the admin tried to revoke what had been a permanent residency permits on a whim. And the courts look very different now. www.vox.com/2017/1/28/14...

Trump's immigration ban initially applied to up to 500,000 green card holders

But the Trump administration now says they may return to America from abroad if they pass security checks