Obama's Birth Certificate and the U.S. Supreme court are they both related to fraudulent government

Is obama a natural born American citizen? Or are we all living under the constitution of delusion?

There is some contraversy about weather we are even living under the constitution our founding fathers instituted in 1776.The question surounds what happened after the civil war between the states.Abraham Lincoln delared marshall law during that war or police action as he called it at the time.And the question is after he was assassinated did we ever legally go back to being a constitutional government,or were we allowed to believe that was the case for political reasons.

If we aren't living under the original constitution then would all the laws passed since then be constitutionaly binding or are we living under another version of the constitutional law,one where the president no longer is required to be born in the unitedstates or one of it's former territories  such as hawaii as some claim Obama is doing?