George Herbert Walker Bush, too. The facts show they are suspects, more than authorities.
Poppy brought up the assassination of President Kennedy while delivering a eulogy for President Ford. It was a telling moment:

Poppy Bush brought up JFK Assassination and ''Conspiracy Theorists'' at Ford Funeral
http://www.democraticunderground.com/discuss/duboard.php?az=view_all&address=364x3029417
Poppy smirks or laughs or grins at the moment he says "deluded gunman" near the 1:09 mark:
George H.W. Bushs Eulogy for Gerald R. Ford
The New York Times
Published: January 2, 2007
Following is the transcript of the eulogy for former President Gerald R. Ford delivered today by former President George H.W. Bush in Washington, as recorded by The New York Times.
EXCERPT
After a deluded gunman assassinated President Kennedy, our nation turned to Gerald Ford and a select handful of others to make sense of that madness. And the conspiracy theorists can say what they will, but the Warren Commission report will always have the final definitive say on this tragic matter. Why? Because Jerry Ford put his name on it and Jerry Fords word was always good.
A decade later, when scandal forced a vice president from office, President Nixon turned to the minority leader in the House to stabilize his administration because of Jerry Fords sterling reputation for integrity within the Congress. To political ally and adversary alike, Jerry Fords word was always good.
SOURCE:
http://www.nytimes.com/2007/01/02/washington/02cnd-ford-ghwb.html
PS: Of course, to Gerald Ford Warren Commission skeptics presented "no problem."
http://www.democraticunderground.com/discuss/duboard.php?az=view_all&address=389x3772251
PPS: What's even more telling is how there are still people interested in scrubbing the assassination record of any reference to Poppy.
PPPS: For those interested, background...
Know your BFEE: Poppy Bush was in Dallas the day JFK was assassinated.