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A member of the Mexican Guard stands guard at the U.S.-Mexico border. Photo: Justin Hamel/AFP via Getty Images

The Customs and Border Protection agency confirmed to Congress today that four people arrested at the southern border since Oct. 1 match names on the FBI's Terrorist Screening Database, a congressional aide briefed on the correspondence told Axios.

Why it matters: Three of the people arrested were from Yemen and one was from Serbia. The four arrests are more than the number of similar people taken into custody during recent full fiscal years, according to the source. In fiscal 2018, six people from Yemen and Bangladesh were arrested.

  • Most migrants arriving at the U.S.-Mexico border come from Mexico or Central America and are seeking asylum, family reunification or better jobs in the U.S.
  • Republican House members who visited the border on Monday said an unspecified number of migrants crossing the border had names matching those on the terror watchlist.
  • Former President Trump and other conservatives have frequently warned — sometimes inaccurately — about foreign terrorists entering the United States via the southern border.

The big picture: The watchlist is long, and it includes people who are "known to be or reasonably suspected of being involved in terrorist activities," according to the FBI.

  • The Department of Homeland Security stopped more than 3,700 people on the watchlist from coming into the country during fiscal year 2017, ending Sept. 30, 2017.
  • Most were stopped at airports.

Editor's note: This story has been updated with further details about the watchlist.

Go deeper

Super typhoon Surigae explodes to Cat. 5 intensity

Super Typhoon Surigae seen on satellite imagery Saturday morning east of the Philippines. (CIRA/RAMMB)

Super Typhoon Surigae surged in intensity from a Category 1 storm on Friday to a beastly Category 5 monster on Saturday, with maximum sustained winds estimated at 190 mph with higher gusts.

Why it matters: This storm — known as Typhoon Bising in the Philippines — is just the latest of many tropical cyclones to undergo a process known as rapid intensification, a feat that studies show is becoming more common due to climate change. It weakened slightly, to the equivalent of a strong Category 4 storm, on Sunday.

4 hours ago - World

Biden adviser warns "there will be consequences" for Russia if Navalny dies

The Biden administration warned the Russian government "that there will be consequences" if jailed Russian opposition leader Alexei Navalny dies, National Security Adviser Jake Sullivan told CNN on Sunday.

The big picture: Sullivan also defended President Biden for not mentioning Navalny in a Thursday speech about Russia or in a Tuesday call with Russian President Vladimir Putin, saying the White House aims to deal with the issue "privately and through diplomatic channels."

3 killed, 2 wounded overnight in Kenosha bar shooting

Three people died and two were hospitalized with serious injuries after a gunman entered bar in Kenosha County, Wisconsin, the police department said in a statement on Sunday. Police responded to the shooting at around 12:42 a.m. and the suspect has not been found.

The big picture: The midnight shooting is the latest in a string of deadly mass shootings to hit the U.S. since March, fueling a debate in Washington about how to regulate the weapons.