Only the Founders. Read it.
No person except a natural born citizen, or a citizen of the United States, at the time of the adoption of this Constitution, shall be eligible to the office of President; neither shall any person be eligible to that office who shall not have attained to the age of thirty-five years, and been fourteen years a resident within the United States.
Only the founders could be ‘just’ citizens. But Chester Arthur’s father was from the UK and that didn’t disqualify him.
Think about this: if England decided to make Sarah Palin a British citizen, would that disqualify her?
Chester Aurther. Look it up.