Watch live: Trump speaks at NASA Aerospace Expo in Florida

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U.S. on edge of losing measles elimination status as case count rises

01:46

Secret Service arrests armed man suspected of threatening Trump near White House

01:21

Armed man arrested near White House for allegedly threatening Trump

00:43

Stephen Miller named new White House chief of staff

02:45

Father of co-pilot killed in Learjet crash: ‘She showed me what it means to be a hero’

04:15

Judge approves block on construction of Trump’s Washington-area arch

00:34

Meghan Markle’s estranged father arrested in Florida

04:20

J.P. Morgan global market strategist talks tech stock sell-off

02:48

The U.S. added 165,000 jobs in October and the unemployment rate fell to 4.1%

03:47

Nithya Raman wins Los Angeles mayoral race, NBC News Project

05:03

As vote counting continues in Mississippi, both sides brace for legal battles

05:07

Heroic security guard confronts gunman

01:30

Flash flood emergency rescue

01:53

California governor commutes all death sentences

01:26

Stocks plunge after post-election rally

03:14

The insurance company denied her cancer treatment. One email changed everything.

03:16

Third generation of carnival bosses fight to survive rising costs

02:42

California Governor Newsom commutes all death sentences in state

02:28

Former West Point cadet indicted for forced abortion

03:26

At least three injured in shooting at Des Moines post office building

02:14