Donald Trump visited a McDonald's in a key Pennsylvania county on Sunday. Kamala Harris said she once worked at a McDonald's, which is a key part of her biography. For weeks, Trump has attempted to sow doubt — without providing evidence — that Vice President Kamala Harris ever worked at McDonald's, which has become a key part of her biography. Trump senior advisor Jason Miller also cast doubt on Harris' McDonald's employment on Saturday, telling reporters that Trump was going to the restaurant "so that one candidate in this race could have actually worked at McDonald's." Related stories"When Trump feels desperate, all he knows how to do is lie," Harris campaign spokesman Ian Sams told The New York Times.

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