Rep. Seth Moulton. Photo: Bill Clark/CQ Roll Call via Getty Images

Rep. Seth Moulton (D-Mass.) officially launched his 2020 presidential campaign on Monday.

The big picture: Moulton, an Iraq War veteran who led an infantry platoon while serving in the Marines, plans to make foreign policy, national security and defense his key issues. Axios' Mike Allen scooped last week that Moulton would be jumping into the race after he was spotted filming a launch video in his hometown of Marblehead, Mass.

Go deeper: Everything you need to know about Seth Moulton

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Updated 5 mins ago - Health

N.Y., N.J. and Conn. to require travelers from 35 states to quarantine

Photo: Spencer Platt/Getty Images

Travelers from 35 states are now required to quarantine for 14 days when traveling to New York, New Jersey and Connecticut, per New York state's health department.

What's new: New York City will set up bridge and tunnel checkpoints to enforce the quarantine order, Mayor Bill de Blasio said Wednesday, per the Wall Street Journal.

When U.S. politicians exploit foreign disinformation

Illustration: Aïda Amer/Axios

U.S. political actors will keep weaponizing the impact of widespread foreign disinformation campaigns on American elections, making these operations that much more effective and attractive to Russia, China, Iran or other countries backing them.

Why it matters: Hostile powers’ disinformation campaigns aim to destabilize the U.S., and each time a domestic politician embraces them, it demonstrates that they work.

58 mins ago - Technology

Samsung debuts Note 20, new foldable smartphone

The Galaxy Note 20 Ultra. Photo: Samsung

Samsung unveiled its crop of new mobile devices Wednesday, including two versions of the Note 20 smartphone, an updated foldable device, two tablets and a watch.

Why it matters: The new devices aim to give Samsung an early start in the second half of the year, with products aimed at parents buying fresh gear for the back-to-(home)school season.