The Trump administration's moves to limit public access to government records are prompting warnings from watchdogs and historians. The big picture: As the Justice Department challenges the constitutionality of the Presidential Records Act and slow-walks some Freedom of Information Act requests , worries persist about weakened oversight and the government being enabled to spin a curated narrative of American history. The Presidential Records Act and FOIA exist to preserve presidential documents as public property and to ensure access to government records, respectively. "By erasing and deleting the information to which we are entitled, they are depriving the public of information ... to know whether their government has been serving them as they promised to," Chioma Chukwu, executive director of American Oversight, tells Axios. State of play: The Justice Department issued a memo in early April declaring the Presidential Records Act — a Watergate-era law — unconstitutional.…