Supplied arms to support genocide in Indonesia, among other crimes. Him building homes now is just some light penance before he's shipped off to hell. https://fair.org/media-beat-column/jimmy-carter-and-human-rights-behind-the-media-myth/

Set up all the groundwork for funding the Mujahideen terrorists in Afghanistan, the funding of the dictatorship and death squads in El Salvadore, setting up the groundwork for the fuckery Reagan did with Iran-Contra.

Carter also jumpstarted neoliberalism rot monetization and the drive to privatize. Willingly laid the foundation for Reagan.