The former US vice-president's Secret Service protection has been revoked ahead of a15-city book tour to promote a memoir about her failed presidential run last year.

Trump has revoked Kamala Harris’ extended Secret Service protection, weeks before her national book tour begins.

In ordering the revocation of the clearances, President Donald Trump was turning to a favored retributive tactic that he’s wielded — or at least tried to — against high-profile political figures, ...

The Trump administration's announcement this week that it would rescind the security clearances of 37 current and former national security officials was hardly an isolated act.