was that assassination done by a "nutjob"...a number of confederates (traitors to America) were involved and several people subsequently hanged for being in on the plot...such planning and precision can hardly be attributed to just a 'nutjob' (as traitor confederate sympathizes claim)...if you go to the Ford Theatre museum, there is the tux that Lincoln was wearing, with pieces pulled out that were covered with his blood, grabbed by confederates as souveniers because their plot was so successful...
reagun was shot by John Hinkley of Evergreen Colorado...there remains serious concern about involvement by the benefactors (should reagun have died, bush1 would have assumed the Presidency immediately), since amazingly, in a Nation of over 260 Million people, Neil Bush (bush1's other son) admitted planning to have dinner with Hinkley's brother the night that John Hinkley shot reagun (and lawyers claimed that Hinkley had no idea what was happening, yet he traveled across the country, shot 6 bullets and HIT 6 people, which indicates ability to plan and function and many thought that investigation was totally inadequate because the BFEE relationships slipped by)...reagun survived and the dinner was cancelled, so bush1 did not assume the Presidency...lots of questions about this attempt have never been answered and nobody gets to talk to Hinkley...it also appeared that John Hinkley's parents were oil barons and close friends of bush1 and bush2 and son Neil bush....my my my....??? maybe this story is what Sharon bush recently threatened to tell everyone, unless she got a better divorce settlement from neil...afterall, she would know...
JFK assassination seems also to have the possibility of a benefactor, Lyndon Johnson, or others have put forward cuban plots or other enemies...it can hardly be called a 'nutjob' since lots of people wonder if Lee Harvey Oswald really did it...it seemed odd that lee had travelled to russia several times..that the investigation was mangled and incomplete, that there appeared to be several shots from several different places...that lee was himself shot by Jack Ruby almost as soon as lee was captured, and Jack died from cancer in jail, so he couldn't talk either...lots of questions about whether this was a big plot and who didn't want lee to talk and possibly tell all....
the two attempts on Gerald Ford were indeed "nutjobs', but also failures...the difference is notable, since both would-be assassins were long time Charles Manson druggies, Squeaky Fromme pointed the gun right into Ford, but didn't know how to operate the gun...the second assassin, Sarah Moore forgot to add bullets...so that's a 'nutjob', as opposed to others, who were plenty sane enough to put bullets in and plan the whole thing...
Clinton suffered through an airplane flying right up Pennsylvania Ave and crashing into the White House...also, a soldier from Colorado Springs blasted the whole front of the White House with an automatic weapon...I think the guy in the airplane died, but not certain...there's little info on the soldier's motives...much to his credit, Clinton never hid from Americans (as bush2 does) and he frequently jogged from the WH to McDonald's for food, shaking hands and signing autographs...loved by people everywhere...
there is an exhibit in the Smithsonian American History Museum about Presidential Assassinations...this web-link claims that since 1835, there have been 11 assassination attempts on the President, 4 have been successful....Lincoln, William McKinley, JFK, and James Garfield...I am certain that historians have looked at each carefully and have a variety of theories and writings, and some may be very different, depending on who's writing and what their political agendas are (such as traitor confederates)....
http://www.americanhistory.si.edu/presidency/pdf/7-9.pdf#xml=http://americanhistory.si.edu.master.com/texis/master/search/mysite.txt?q=presidential+assassinations&order=r&id=50283013301d6607&cmd=xml