No President of the United States was ever convicted of setting up and assasssination.
Ronald Reagan
Andrew Jackson.
At Blair House in Washongton, DC.
Gerald Ford.
Life in prison for an assassination attempt; the death penalty if convicted of assassination of a President.
The first was Andrew Jackson, the 7th Presdent of the United States.
James Brady.
An assassination means the victim dies. An assassination attempt is when the political figure survives. President Reagan's shooting by Jon Hinckley Jr. was an attempt, as were two attempts on Gerald Ford, although Ford was not injured in either case.
Martin Van Buren
The conspirators involved in President Lincoln's assassination were hanged at Fort McNair in Washington DC. The date was July 7, 1865.
That would be Gerald Ford due to the attempt on President Reagan was well after he took office. Ford had not been in office long after Nixon had resigned.
Martin van Buren