exhibit at the field museum.

First off tonight, Mayor Brandon Johnson found himself on a very hot seat this morning called to defend Chicago's efforts to protect undocumented immigrants from deportation in front of the U.S. House Oversight Committee.

>> Everybody in crime is devastating.

But scapegoating entire communities is not only misleading.

It is unjust and it is beneath us any actions that amplify fears of deportations make Chicago more dangerous.

>> Our Heather Sharon joins us now with more on the mayor's very high stakes and very long Thanks for being Happy to do it.

So the mayor appeared alongside his counterparts from New York, Boston, Denver facing Sharp questioning as expected about the city's welcoming city ordinance.

And if it stopped immigration agents from deporting criminals, here's some of the first exchange Mayor Johnson had with Republican Representative James Comer of Kentucky who came who chairs that committee.

>> That's criminal.

Be turned over with a criminal warrant.

They are subject to the federal laws that includes deportation.

The point that we've got to iron out today.

Is that we have to have cooperation.

>> So that came just minutes into today's 6 hour hearing.

Is it fair to say it set the tone for the day?

did because I think there was a lot of confusion among the Republican members of the committee about what exactly Chicago's welcoming city ordinance does.

It does not prevent federal agents from coming to Chicago and deporting people who are here without permission.

What it does do is prevent city officials from assisting that effort unless there is a judicial warrant.

We heard the mayor say that time and time again.

And I think several of the Republican members didn't quite know what to do that because, of course, this is sort of seen as sort of blanket protection for undocumented immigrants, which they wrongly cast as all criminals.

When we know that most undocumented Chicagoans are just trying to live their lives, that really took a little bit out of the air in the hearing room and it appeared because people really wanted sort of a viral moment front with the mayor didn't come well despite plenty of Republican politicians taking shots at Tim Johnson did have a few.

>> A friendly faces.

Some Democrats on the panel panel.

Was he able to use that to his advantage at all?

He what he did.

There is nothing.

Brandon Johnson looks more than serving as Chicago's hype So he was able to proclaim Chicago the best freakin city in the world and he was able to pay homage to our very own urban historian Sherman Della Thomas proclaiming that everything dope comes from Chicago.

Pretty sure the first time that phrase has been entered into the congressional that's for can city in the world.

We've heard that line of time to So as we've reported, the Justice Department suing Chicago over that welcoming city ordinance.

Officials have even threatened to arrest Mayor Johnson if he doesn't aid in the Trump administration's efforts to deport millions of undocumented immigrants.

Did anything that happened today have any bearing on those efforts?

Not really.

There was a lot of worry among Johnson supporters that he was going do something to sort of put the city on its back foot in that litigation, which hasn't even really gotten started yet.

Nothing really came along those lines, although we did hear Florida Representative Anna Paulina Luna say she was going to make a criminal referral to the Department of Justice to investigate all for Mares for violating federal immigration law.

That's the same allegation that the Department of Justice already made an already investigating.

It's not clear that that is really going to add to the city's legal woes.

But I would imagine that after that 6 hour hearing Brandon Johnson is glad to be on his way back I think a lot what had Sharon.

Thank you very much.

Thanks,