The amount of evidence that you would need to come up with to legally arrest Obama for treason would be insane, especially considering that you have done none of it. Alt right blogs are not acceptable evidence in court.
So if you can ever find any evidence, get back to us.
trump keeps saying he will suspend the Constitution, and overthrow the government with a self coup using either the military of deputized "patriots." I think we have done a better job of educating US citizens, and I doubt that would work.