NEW YORK (AP) — Newsweek has apologized for an op-ed that questioned Sen. Kamala Harris' U.S. citizenship and her eligibility to be Joe Biden's running mate, a false and racist conspiracy theory which President Donald Trump has not dismissed.

"This op-ed is being used by some as a tool to perpetuate racism and xenophobia. We apologize," read Newsweek's editor's note on Friday, which replaced the magazine's earlier detailed defense of the op-ed.

"We entirely failed to anticipate the ways in which the essay would be interpreted, distorted and weaponized," read the apology, signed by Josh Hammer,...