Meanwhile, a group of Muslim Americans, many of them Sanders supporters, have been critical of Farooq Mitha, a former Pentagon official who is Biden’s senior adviser on Muslim American engagement. His high-profile presence in the campaign, along with other former defense officials, has split the Muslim community and detracts from the need to siphon the military budget into technologies needed to fight climate change, said Nadia Ahmad, a Sanders supporter from Florida. “That’s our top national security challenge,” Ahmad, an environmental law professor in Orlando, told The Nation. Mitha declined to comment.