Sign up for our daily briefing

Make your busy days simpler with Axios AM/PM. Catch up on what's new and why it matters in just 5 minutes.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Stay on top of the latest market trends

Subscribe to Axios Markets for the latest market trends and economic insights. Sign up for free.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Sports news worthy of your time

Binge on the stats and stories that drive the sports world with Axios Sports. Sign up for free.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Tech news worthy of your time

Get our smart take on technology from the Valley and D.C. with Axios Login. Sign up for free.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Get the inside stories

Get an insider's guide to the new White House with Axios Sneak Peek. Sign up for free.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Catch up on coronavirus stories and special reports, curated by Mike Allen everyday

Catch up on coronavirus stories and special reports, curated by Mike Allen everyday

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Want a daily digest of the top Denver news?

Get a daily digest of the most important stories affecting your hometown with Axios Denver

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Want a daily digest of the top Des Moines news?

Get a daily digest of the most important stories affecting your hometown with Axios Des Moines

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Want a daily digest of the top Twin Cities news?

Get a daily digest of the most important stories affecting your hometown with Axios Twin Cities

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Want a daily digest of the top Tampa Bay news?

Get a daily digest of the most important stories affecting your hometown with Axios Tampa Bay

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Want a daily digest of the top Charlotte news?

Get a daily digest of the most important stories affecting your hometown with Axios Charlotte

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Illustration: Sarah Grillo/Axios

In a closely divided Congress, the Senate’s Mischief Makers could thwart their leaders' best-laid plans with their own agendas.

Why it matters: On Wednesday night, we shared a list of House members who our leadership sources on the Hill consider some of the top troublemakers. But their Senate counterparts may be even more impactful in a 50-50 chamber, where Vice President Kamala Harris holds the tiebreaking vote.

Not all are created equal. Democrats often contend with an outspoken, very progressive wing of their caucus and try to keep centrists from crossing party lines. Republicans have senators who led efforts to invalidate the 2020 election results and flirted with the same conspiracy theories that fueled groups involved in the Capitol siege.

Republicans:
  • Rand Paul (Kentucky): The libertarian frequently bucks leadership and stalls compromises. He's not afraid to be on an island within his party.
  • Ted Cruz (Texas) and Josh Hawley (Missouri): Both have an eye on the 2024 presidential race, and both will break with leadership for political benefit. The two ignited the Senate debate over challenging the Electoral College votes.
  • Ron Johnson (Wisconsin): He didn't hesitate to open political investigations into then-President Trump's opponents, even when Sen. Mitch McConnell advised against them.

Time will tell about whether GOP freshmen Sens. Roger Marshall (Kansas) and Tommy Tuberville (Alabama) also will haunt McConnell's plans, our congressional sources say.

Democrats/Independents:
  • Kyrsten Sinema (Arizona) and Joe Manchin (West Virginia) aren't afraid to stray across party lines. The latest example: They had private conversations with Republicans, including McConnell, signaling they wouldn't back Democratic efforts to eliminate the filibuster.
  • Bernie Sanders (Vermont): The independent who caucuses with the Democrats is fearless and refuses to fall in line. He and Hawley made an unlikely pair when they teamed up to push leadership for $2,000 stimulus checks in the last COVID relief bill.

Go deeper

The Mischief Makers

Illustration: Sarah Grillo/Axios

Several Republican and Democratic lawmakers are emerging as troublemakers within their parties and political thorns for their leadership.

Why it matters: We're calling this group "The Mischief Makers" — members who threaten to upend party unity — the theme eclipsing Washington at the moment — and potentially jeopardize the Democrats' or Republicans' position heading into the 2022 midterms.

Biden explains justification for Syria strike in letter to Congress

Photo: Chris Kleponis/CNP/Bloomberg via Getty Images

President Biden told congressional leadership in a letter Saturday that this week's airstrike against facilities in Syria linked to Iranian-backed militia groups was consistent with the U.S. right to self-defense.

Why it matters: Some Democrats, including Sens. Tim Kaine (D-Va.) and Chris Murphy (D-Conn.) and Rep. Ro Khanna (D-Calif.), have criticized the Biden administration for the strike and demanded a briefing.

6 hours ago - Health

FDA authorizes Johnson & Johnson's one-shot COVID-19 vaccine for emergency use

Photo: Illustration by Pavlo Gonchar/SOPA Images/LightRocket via Getty Images

The Food and Drug Administration on Saturday issued an emergency use authorization for Johnson & Johnson's one-shot coronavirus vaccine.

Why it matters: The authorization of a third coronavirus vaccine in the U.S. will help speed up the vaccine rollout across the country, especially since the J&J shot only requires one dose as opposed to Moderna and Pfizer-BioNTech's two-shot vaccines.