There are not many constitutional requirements to become president. They only need to:
Be a natural-born citizen of the United States
Be at least 35 years old
Have been a resident of the United States for 14 year
Not specific to the presidency, but the Constitution states that no person shall hold any any office who, having previously taken an oath, as an officer of the United States, to support the Constitution of the United States, shall have engaged in insurrection.
Republican hypocrisy is at a fever pitch since the Colorado Supreme Court decision. The GOPers argue that the 14th Amendment applies to every elected office except the presidency. They also insist that the 14th requires any excluded oath-taking office-seeker must be convicted of insurrection (it doesn't).
Republicans apparently think that being a natural-born citizen only applies to Democrats. Presidential candidates John McCain was born in Panama; George Romney (Mitt's father) was born in Mexico. Romney ran for president in 1968. Their place of birth was not an issue for either candidate.
Without an iota of evidence, Donald Trump led the Birther movement against Obama claiming he was born in Kenya or somewhere.
Personally, I would vote for constitutional amendment that would loosen the presidential requirements. I would not have a problem with a presidential candidate who was not born in the United States. There have been dozens of perfectly good governors not born in the US and hundreds not born in the state they governed (see link). I am not diametrically opposed to younger than 35 year-old candidates. I would prefer a candidate who lived in America for at least 14 years. I also prefer candidate who have not engaged in an insurrection.