Obama definitely was born in the USA... Still, in the USA TODAY poll, only 38% of Americans say Obama definitely was born in the USA, and 18% say he probably was. Fifteen percent say he probably was born in another country, and 9% say he definitely was born elsewhere. Source: USA TODAY/Gallup Poll of 1,013 adults. April 20-23. Margin of error +/-4 percentage points. Republicans are inclined to say the president was born abroad by 43%-35%. For what itâs worth, not everyone is convinced Trump was born in the USA either: 43% say he definitely was born here, and 20% say he probably was; 7% say he definitely or probably was born in another country. Nearly three in 10 say they donât know enough to say. The poll of 1,013 adults, taken Wednesday to Saturday, has a margin of error of +/â4 percentage points.