He can’t tell you what apps you are allowed to have on your phone directly, but he can blacklist a business for US businesses, so Apple and Google would be forc

He can’t tell you what apps you are allowed to have on your phone directly, but he can blacklist a business for US businesses, so Apple and Google would be forced to remove the app from their stores. No easy sideloading on iOS, so if it is removed from the store you can’t have it on your iPhone.