Axios

House Democrats are set to face their most contentious and personal committee battle yet as Rep. Melanie Stansbury (D-N.M.) on Monday jumped into the race to lead Democrats on the Natural Resources Committee.

Why it matters: Stansbury is pitted against Rep. Jared Huffman (D-Calif.), who was running uncontested for the role after incumbent ranking member Raúl Grijalva (D-Calif.) withdrew his reelection bid.

Nvidia, the key backbone in global AI infrastructure and 2024's most important stock, has a new distinction: giant corporate ping pong ball caught up in U.S.-China tensions.

Why it matters: Geopolitical forces bearing down on the U.S. tech giant could have far-reaching ripple effects for investors and tech ecosystems.

Luigi Mangione, the person of interest in the killing of UnitedHealthcare CEO Brian Thompson, was carrying a so-called "ghost gun" when he was arrested in Pennsylvania on Monday, law enforcement said.

The big picture: The privately made firearms have become increasingly popular among criminals. They are untraceable by law enforcement as they lack the serial numbers found on other guns.

Sen. Joni Ernst (R-Iowa) signaled Monday she's willing to give a chance to President-elect Trump's embattled Secretary of Defense nominee Pete Hegseth.

Why it matters: Hegseth survived a rough few days of congressional interviews last week, with his nomination clearly at risk. Now he has renewed Trump support and a more optimistic tone from Ernst.

Rep. Brian Mast (R-Fla.) won the powerful House GOP steering committee's backing Monday to chair the Foreign Affairs Committee next Congress.

Why it matters: Mast edged out a crowded field of contenders — including Reps. Darrell Issa (R-Calif.), Joe Wilson (R-S.C.) and Rep. Ann Wagner (R-Mo.) — to lock down the gavel.

Rep. Kevin Hern (R-Okla.) said Monday he will not run for governor of Oklahoma in 2026, citing concerns about attendance in the 119th Congress.

Why it matters: With their majority set to dwindle to 217-215 by late January, House Republicans will likely need every one of their members present and voting to pass key legislation.

Luigi Mangione, 26, arrested today on gun charges, is a "strong person of interest" in the killing of UnitedHealthcare CEO Brian Thompson, the NYPD announced.

• Mangione was detained at a McDonald's in Altoona, Pennsylvania. He has ties to Maryland, California and Hawai'i. 

A McDonald's employee called local police after recognizing Mangione from coverage of the shooting suspect, NYPD Commissioner Jessica Tisch said during an afternoon press conference.

Time magazine revealed its 10-person shortlist for its "2024 Person of the Year," which will be announced Thursday:

• 🗳️ In politics, there's President-elect Donald Trump, Vice President Kamala Harris, Israeli Prime Minister Benjamin Netanyahu, British royal Kate Middleton, Russian economist and opposition leader Yulia Navalnaya, and Mexican President Claudia Sheinbaum.
• 💵 In business and entertainment, there's Elon Musk, Meta CEO Mark Zuckerberg, Fed chair Jay Powell and podcaster Joe Rogan.

1. 🎥 ChatGPT maker OpenAI released its AI video tool Sora for general use. Go deeper.
2. 🚁 The Pentagon is again pausing Osprey aircraft flights after a near-crash last month. Go deeper.
3. 🍫 Sweets and snacks giant Mondelez is exploring a bid for Hershey's, Bloomberg reports. Go deeper.

Tonight's Bengals-Cowboys "Monday Night Football" matchup will be simulcast "Simpsons"-style — the latest incarnation of games broadcast in live animation.

• 🏟️ Player-tracking technology will be used to recreate players' movements in the iconic cartoon's visual style.

White House Chief of Staff Jeff Zients is asking his team to "sprint to the finish line" to cement the president's legacy, reshape the federal judiciary and spend all the money they possibly can in their final 42 days in office.

Why it matters: President Biden and Zients want to ensure a smooth transition to President-elect Trump's second term, but they also want to lock in any policy changes allowed by law.

A now-reversed Anthem Blue Cross Blue Shield policy that would have created a time limit for coverage of anesthesia has led to a Democratic bill that would prevent such a cap in the future.

Why it matters: The bill, introduced by Rep. Ritchie Torres (D-N.Y.), draws on a renewed focus on and energy around health policy spurred by the killing of United Healthcare CEO Brian Thompson.

The U.S. military is again pausing Osprey aircraft flights following a near-crash last month.

Why it matters: This is the latest setback for the U.S. Osprey fleet, which was temporarily grounded last year following a series of fatal crashes in recent years.

South Korea's Justice Ministry imposed a travel ban on embattled President Yoon Suk Yeol Monday as he remains under investigation for his since-overturned martial law declaration, multiple outlets reported.

The big picture: Yoon's surprise decree sparked a flurry of protests and catapulted the U.S. ally into political turmoil. The unpopular leader faces an impeachment vote and a probe over potential rebellion charges.

After four years of a pro-labor White House, the pendulum appears to be swinging back in favor of business — by at least one measure, anyway: The extraordinary wealth of the incoming Trump team.

Why it matters: The economic background of political leaders influences how they govern — richer lawmakers generally push for policies that favor business interests and those of the wealthy.

Lara Trump announced Sunday she plans to formally step down as Republican National Committee co-chair at the next RNC meeting.

Why it matters: Several Republican senators are pushing for her to fill the U.S. Senate seat set to be vacated by Secretary of State nominee Marco Rubio in Florida, and President-elect Trump's daughter-in-law confirmed Sunday she's seriously considering the move.

President-elect Trump selected his personal lawyer Alina Habba to serve as counselor to the president in his incoming administration, per a Sunday evening announcement.

Why it matters: It's the latest example of Trump giving top administration roles to lawyers who've defended him in court. Habba has represented him in some of his most high-profile civil cases.

Stephen Miller, the incoming White House deputy chief of staff for policy, on Sunday gave new details on the Trump administration's plan for what he called "the largest deportation operation in American history."

Why it matters: Miller made clear during his interview on Fox News' "Sunday Morning Futures" that deportations would be Trump's no.1 priority ahead of issues including making reforms to tax and trade and the debt ceiling.