Obama, not qualified to be US President?

I think there are many people who are not satisfied when Obama won the election and to sit in the White House for the first time being a colored skin man. So I don't find the issue as a heavy problem because there will be many efforts to eliminate Obama, not just this one but many to come. A thorough check should be done before the election takes place if they really don't want Obama to go for the election. Why must we cry over spilled milk? Actually the selection of Obama is good because we know many people in the U.S. wants a change in the way the leader leads. We can't deny the voice of the people in majority.