U.S. District Judge Mary Kay Vyskocil is presiding.
The parties are noting the appearances for the court.
Up first and arguing to invalidate the subpoena is Ted Boutrous, who says the subpoena has "grave" separation of powers issues.
Judge Vyskocil questions Boutrous sharply from the out the gate, interrupting Bragg's attorney routinely on various issue.
She asks why overseeing the use of federal money isn't a valid legislative act.
She also asks about how Pomerantz's book isn't a waiver.
After Boutrous says that Rep. Jordan's probe is trying to "intimidate" the DA's office, the judge snaps: "That's your interpretation of it."
Judge: "There's politics going on here on both sides here. Let's be honest about that."
Boutrous says he doesn't concede that.
The judge then calls much of the complaint irrelevant to the subpoena issue.
I can't emphasize enough: This is what lawyers call a hot bench.
Manhattan DA Bragg's attorney is getting a very tough reception.
Boutrous hammers home the Trump v. Mazars precedent by SCOTUS, which created the test for showing a congressional subpoena serves a legislative purpose.
Then, a Democratic-controlled committee sought Trump's tax information.
Now, the shoe's on the other foot and the GOP-controlled committee wants to use this precedent to fight the subpoena.
Brutal questioning on Pomerantz's book.
Judge: Have you read this book?
Other Bragg lawyer: Yes.
Judge: Does it preserve your confidences?
No, she answers.
Judge: "If I find a valid legislative purpose, I am not allowed to look at the motivations on either side."
Boutrous says the landscape changed after Trump v. Mazars, after which judges now have to look at the evidence.
Up now: Jordan's lawyer Matthew Berry.
The judge asks Berry whether the committee needs its "adjectives" of "politically motivated" to make their case.
"Doesn't it politicize it on your side, as well?" she asks.
Jordan claims that his committee is considering legislation to guard against political prosecution by local prosecutors.
The judge asks Berry why he needs testimony if one such bill is in play.
Q: If you already introduced the bill, why do you need testimony?
The judge recites the court's holding in Mazars to Jordan's lawyer.
"Do you intend to respect the invocation of privilege if this deposition were to go forward?" she asked.
Berry says the chair will decide on a case-by-case basis whether the sustain privilege objections.
Note: Bragg's attorneys had an extremely tough reception.
Jordan's lawyer, whose arguments are ongoing, isn't having an easy reception, either. But it's certainly less stinging.
The judge notes, not in these words, that Pomerantz is stuck between a rock and a hard place.
If he answers the questions, he faces possible liability from the DA, and if not, the wrath of Congress.
The judge tells Berry: "You have to admit, it is somewhat unusual" for Congress to conduct oversight on a local prosecutor.
Berry accuses Bragg's legal team of "rhetoric and hyperbole" in this particular case.
This is just about the subpoena to Pomerantz, he says.
Boutrous says it's "totally unprecedented" for Congress to go after local prosecutors.
The judge counters it's also unprecedented for a prosecutor to charge a former president.
"They say that they're doing it because the indictment raises, in their mind," concerns, she says.
Judge skewers Bragg's legal team for filing what she called an unauthorized reply brief.
She says she'll wrap up the hearing and issue a ruling as promptly as she can.
Then, she invites Berry back to take his final three minutes.
Both sides got grilled, but the DA's attorneys can't be too happy about how that went.
A hearing has begun over the enforcement of a federal judge's order protecting journalists, protesters and clergy from attacks by ICE agents.
Listening live.
Judge Ellis specifying the type of testimony that she wants to hear on Monday:
"I want somebody with knowledge from ICE and somebody with knowledge from Customs and Border Patrol."
The plaintiff's attorney wants Judge Ellis to order someone within the chain of command of Operation Midway Blitz.
Judge Ellis: "I hear you. ... I at my fingertips can't tell you who's in the chain of command, who has the most knowledge and who is the best witness."
Trump tried to end-run a federal judge's ruling blocking the deployment of the Oregon National Guard by sending the *California* National Guard to Portland.
A hearing is about to start for a judge to decide whether to block him again.
At the start of DOJ lawyer Eric Hamilton's arguments, Senior U.S. District Judge Charles Breyer already gives him a hot bench.
Hamilton's arguments: the Posse Comitatus Act is a criminal statute with no civil application.
Breyer peppers him with questions.
Breyer: What is the remedy? ... Let's assume [the President] violates the terms of the Posse Comitatus Act. ... The facts aren't in dispute. They're disputed in this case. ... What then is the remedy?"
Trump’s appeal of a federal judge’s ruling finding his federalization of the National Guard illegal heads to court minutes from now (noon Pacific Time).
Follow along for analysis, and watch live on the court’s YouTube page.