The Biden administration is considering a six-month extension for American troops in Afghanistan, just weeks before the May 1 deadline that the Trump administration had negotiated with the Taliban to withdraw all US forces from the country, according to a defense official.The Biden administration is considering a six-month extension for American troops in Afghanistan, just weeks before the May 1 deadline that the Trump administration had negotiated with the Taliban to withdraw all US forces from the country, according to a defense official.