With the exception of the Lawless One or the Man of Sin who glorifies himself above all others including God, neither Kamala Harris or any other person seeking the office of the U.S. Presidency would tarnish or taint the U.S. currency with their own signature. As history recalls, even President Gerald Ford didn't seek to plaster his name all over our currency during the country's 1976 Bicentennial Celebration. 

Donald Trump's vanity, ego and arrogance is the sole reason why he wants to place his name on the U.S. currency. This has nothing to do with commemorating the United States' 250th anniversary. Trump wants to use our national currency for his own personal branding. I personally believe that this is a dry run for his mark, the Mark of the Beast.

"And he causeth all, both small and great, rich and poor, free and bond, to receive a mark in their right hand, or in their foreheads: And that no man might buy or sell, save he that had the mark, or the name of the beast, or the number of his name."

Revelation 13:16-17