Jack Crowe of the Daily Caller reports on lingering campaign debts linked to Bernie Sanders’ 2016 presidential run.

Democratic Sen. Bernie Sanders’ 2016 presidential campaign currently owes a disputed $450,000 to the various municipalities the Vermont lawmaker visited throughout the race.

Sanders’ campaign has reportedly failed to make good on hundreds of thousands of dollars in event security costs owed to dozens of cities and their police departments.

Sanders has failed to pay the multiple outstanding security bills despite retaining roughly $5 million in leftover cash from the campaign.

While Sanders’ campaign racked up debt all across the country in Arizona, Ohio, Pennsylvania, Washington and Wisconsin, much of the outstanding debt is owed to localities in California. Sanders has visited the state often in search of a sympathetic audience to rally around his single payer health care push.

Sanders plans to return to his creditors’ home state in late September to make an appearance at a California Nurses Association convention in San Francisco. Sanders’ return to California is due to occur roughly one week after the expected roll out of his single payer health care legislation, “Medicare for All.”