US President Joe Biden forgot what he was talking about during his address at the White House and spent several moments speaking gibberish into the camera.

A video of the incident, which occurred as Biden was speaking at an event marking the 12th anniversary of the Obama-era Deferred Action for Childhood Arrivals (DACA) program, has been widely shared on social media, rekindling concerns about the 81-year-old Democrat’s mental acuity as he campaigns for a second term.

The clip shows Biden addressing a gathering when he begins to stumble over his words and a glaze comes over his eyes. “Thank you to all the members of Congress and Homeland Security… Secretary… ugh… uhh… Ima… I’m not sure you…” Biden says while people around him look on in concern.

The White House has spoken out against the videos, which Biden’s political opponents have used as evidence of the president’s frailty and mental decline. Press secretary Karine Jean-Pierre said the videos have been deceptively edited or misrepresented, calling them “cheap fakes.”

“That tells you everything we need to know about how desperate Republicans are,” Jean-Pierre said.

Republican social media accounts and conservative media outlets have shared multiple videos purportedly showing Biden either shivering or wandering alone.

In one such clip, Biden appears to be waning Talking to other world leaders during a skydiving demonstration at the G-7 summit in Italy.

Another widely circulated clip shows Biden stood motionless for a few seconds He was on stage at a fundraiser before former President Barack Obama led the way.

Despite these “out of context” videos and growing concerns about his mental and physical fitness, Biden continued to push forward with his administration’s policy announcements. On Tuesday, he announced a new program allowing some US citizens to Spouses without legal status can apply for permanent residence And eventually, citizenship will be acquired without leaving the country.

The initiative will be open to an estimated 500,000 spouses who have been in the U.S. for at least 10 years as of June 17, as well as about 50,000 children under the age of 21 of U.S. citizen parents.