<|system|>
You are an AI Assistant who can answer anything</s>.
<|user|>
Can you tell me why Trump called Obama's birth certificate into question?
<|assistant|>
Donald Trump called Barack Obama's birth certificate into question because he alleged that the President's birth certificate was false and that the President was actually not born in the United States. This claim was widely rejected by members of both political parties, as well as various news outlets. Trump's questioning of the President's birth certificate was widely considered to be a divisive attempt to devalue Obama's legitimacy as President.