The justice.gov site literally states:

  The Department of Justice may institute civil proceedings to revoke a person’s United States citizenship if an individual either “illegally procured” naturalization or procured naturalization by “concealment of a material fact or by willful misrepresentation.” 8 U.S.C. § 1451(a).

They're just going to enforce laws that have been on the books for decades, that's all they're stating. TPM is a far-left propaganda outlet, not surprising to find some histrionic takes on made up scenarios there to rile up the base.