(CBS News) — The Department of Homeland Security is warning U.S. law enforcement agencies that a group of truckers is planning a protest of COVID-19 vaccine mandates that could start as soon as this weekend in Los Angeles, site of the Super Bowl.

The bulletin, obtained by CBS News, says the convoy could then head east, perhaps reaching Washington, D.C. in time for President Biden’s State of the Union address on March 1.

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The bulletin warns that the convoy “could severely disrupt transportation, federal government, and law enforcement operations through gridlock and potential counterprotests.”

The warning comes as the trucker protest in Canada begins to hinder production at some U.S. auto plants that are running short on parts.

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The bulletin says the DHS “has received reports of truck drivers planning to potentially block roads in major metropolitan cities in the United States in protest of, among other things, vaccine mandates for truck drivers.

“The convoy will potentially begin in California as early as mid-February and arrive in Washington, DC, as late as mid-March, potentially impacting the Super Bowl LVI scheduled for 13 February and the State of the Union address scheduled for 1 March.

Click here for more details from CBS News.

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