Also worth pointing out, this doesn't prevent a President from being impeached for his official actions!
The alternative is the president could be charged with murder, fraud, theft, etc anytime anyone in the country doesn't like something the President did. If the president was criminally and civilly liable for everything the office did, the executive would grind to a halt in tort lawsuits.
The alternative is the president could be charged with murder, fraud, theft, etc anytime anyone in the country doesn't like something the President did. If the president was criminally and civilly liable for everything the office did, the executive would grind to a halt in tort lawsuits.