The American leader said that there were a large number of oil refineries in Delaware, and therefore, during cold weather, drivers were forced to “wash off oil stains” from windows.
“That's why I and a lot of other people I grew up with have cancer.
And that's why for a long time Delaware had the highest cancer rate in the country, ”New York Post quoted Biden as saying during a speech in Massachusetts.
Later, the White House clarified that the American leader had "non-melanoma skin tumors" that were removed before Biden took office.
In November, doctors performed an operation to remove Biden's benign but potentially precancerous formation, a tubular adenoma.