The dumpster fire that is Joe Biden's failed presidency rages on, as the 80-year-old career politician committed another embarrassing gaffe at a public event.

On Sunday, Biden appeared to confuse a Salvation Army officer for a Secret Service agent while visiting a migrant services center in El Paso, Texas.

This was the first time in his presidency — and the only time during his 51-year political career — that Biden has visited the nation's southern border, which is being relentlessly barraged by unvetted armies of illegal aliens.

In the video streamed by KFOX-TV in El Paso, a woman is heard telling him, "And here we have the folks from the Salvation Army."

Biden reacted by shaking a uniformed man's hand, saying, "I spent some time with the Secret Service in Poland and in Ukraine."

When the Salvation Army officer flashed a confused look, Biden corrected himself. "Not Secret Service ... Salvation Army," he said.

Numerous Twitter users said they believe Biden is suffering from dementia and lamented how severe it has gotten.

It’s beyond debate, Joe Biden’s cognitive decline & dementia is acute. Shame on @FLOTUS for putting this poor old man up to being president simply because she wanted to be the First Lady. This is elder abuse! #BidenWorstPresidentEver #dementia https://t.co/wvuaLKCqAk

— The Naked Democrat (@NakedDemocrat) January 10, 2023

Biden tells the Salvation Army guy he spent time at the border Poland and Ukraine. Wait to see the look on the guys face. The man is lost. https://t.co/oaJbuqW6AG

— Robert Hanson (@H26280811Hanson) January 10, 2023

That's sad that he doesn't know how far gone his mind is. https://t.co/rLpRnPUhvm

— Frank Lee Speiken (@frankleespeiken) January 10, 2023

This latest blunder is part of an unbroken chain of alarming gaffes suggesting Biden's cognitive fitness is in serious decline and therefore a grave threat to national security and public safety.

Since being installed in the Oval Office two years ago, Biden has repeatedly referred to Vice President Kamala Harris as "President Harris."

Biden calls Kamala "President Harris" again. pic.twitter.com/GTAFdnZDwm

— Greg Price (@greg_price11) January 5, 2023

In September, the president searched the audience for a dead congresswoman while speaking at a White House event.

"Jackie are you here? Where's Jackie?"

Rep. Jackie Walorski (R-IN) died in a car accident in August pic.twitter.com/cHc3b7zPmE

— Charlie Spiering (@charliespiering) September 28, 2022

In October, Biden committed one of the most shocking missteps any parent could make by forgetting how his first-born son, Beau, had died. During a speech in Florida, the president falsely claimed his son died while serving in Iraq.

"I say this as a father of a man who won the Bronze Star, the Conspicuous Service Medal, and lost his life in Iraq," he said.

In reality, Beau Biden died of brain cancer in Baltimore in 2015 — six years after leaving Iraq.

Joe Biden said his son “lost his life in Iraq.” He actually died six years after he left Iraq in Maryland of brain cancer. This is either an intentional lie or yet more evidence Biden’s dementia getting worse every day. This isn’t a minor slip up. pic.twitter.com/Mij9Vrl3Rv

— Clay Travis (@ClayTravis) October 13, 2022

Republican Rep. Ronny Jackson of Texas, who was the White House physician to former Presidents Barack Obama, George W. Bush and Donald Trump, has repeatedly expressed his grave concerns about Biden’s mental decline.

Jackson sounded the alarm once again last week when he tweeted that Biden must take a cognitive test to prove he's capable of leading the nation during these challenging times.

Biden needs a cognitive exam. HE’S NOT RIGHT. He is NOT fit to be President! Time for him to take the job he is most fit for as a Walmart greeter!

— Ronny Jackson (@RonnyJacksonTX) January 3, 2023

Jackson echoed the sentiments of millions of Americans when he tweeted of Biden: "HE’S NOT RIGHT. He is NOT fit to be President!"

This article appeared originally on The Western Journal.