"Some companies are trying to pull a fast one by shrinking the products little by little and hoping you won't notice," Biden said in a video posted on X, formerly known as Twitter, ahead of Super Bowl LVIII.

"Give me a break. The American public is tired of being played for suckers. I'm calling on companies to put a stop to this. Let's make sure businesses do the right thing now," he said.

Biden, who offered no solutions or policies to address the practice, did not name any specific companies but several brands were shown in the video, including Gatorade, Doritos, Breyers and Tostitos.

Although inflation appears to be slowing, the economy remains Americans' overall top concern, cited by 22% of poll respondents, as they have struggled with inflation and other aftershocks of the COVID-19 pandemic, according to a Reuters/Ipsos poll released last month.

Since taking office, Biden has made a pitch for lower supermarket prices, pushed drug makers to lower insulin costs, hotel chains to reduce fees and tried to diversify the meat-packing industry after beef prices skyrocketed in the aftermath of the pandemic.

(Reporting by Jasper Ward; Editing by Mark Porter)