That is not true... at all. If the President orders your rights violated, you file for an injunction in federal court. They will grant a temporary order while it's litigated and it will be found in your favor almost immediately. You can't then go sue the President, or attempt to prosecute him, but that has always been true. The United States and all its officers have immunity. Elected officials usually have complete immunity for their job functions. If you don't like your mayor you can't prosecute him for neglect.