Michael Barbaro

This is The Daily.

In the days since an immigrant from Afghanistan gunned down two members of the National Guard in Washington, D.C.

President Trump has ordered a sweeping new crackdown on immigration.

That has left almost no corner of the system untouched.

He claimed he's ready to expel anyone who is, quote, not a net asset to the United States.

And he threatened to end immigration from, quote, all third world countries today.

my colleague Hamid al-Aziz on the shooter's journey to the United States and the Trump administration's wide-ranging response.

It's Monday, December 1st.

Hamid, we are turning to you because what began as a horrific shooting in downtown Washington last week has now become a set of far-reaching changes to the U.S.

immigration system, which you cover for The Times.

Just how far-reaching would you say these changes are?

That fallout, which we will discuss in detail in this conversation, because it very much feels like a template for the future of immigration policy in the U.S., it feels like it very much hinges on the specific of who the shooter in this case was, where he came from, the circumstances of how he came into the U.S.

So let's talk about that.

Zero Unit, what is that?

Kind of the tip of the spear when it comes to the U.S.

government and military in Afghanistan.

And how comfortable were people like Lock and Wall, Afghans, in carrying out this kind of alleged brutality against other Afghans?

what happens to Lock and Wall when the U.S.

announces it's going to withdraw, which, as we all remember, then brings the Taliban through the country toward Kabul.

The Afghan military collapses in days, and the U.S.