Jamie Dimon just joined Ken Griffin in warning that taxes could curb expansion plans

Ken Griffin and Jamie Dimon have said they might reconsider building projects. Getty Images Jamie Dimon warned that higher UK bank taxes could affect plans for his London headquarters. The bank announced plans for the 3-million-square-foot, multibillion-dollar building in the fall. Ken Griffin has said he's reconsidering a Midtown office expansion amid a tax spat with Mamdani. London's skyline might not get the JPMorgan treatment. JPMorgan CEO Jamie Dimon said that increasing taxes on banks...