Chicago plot 3 weeks earlier. There was another patsy set up like Oswald

https://abc7chicago.com/archive/5787903/

The Chicago Plot and the Dallas Plot
Threats of violence against political figures happen all the time. The significance of the Chicago plot, if there was one, rested on its apparent similarities to the events in Dallas three weeks later. In particular, there were several similarities between the career of Lee Harvey Oswald and Thomas Arthur Vallee’s account of his own career:
Both were former Marines.
Both had served at Marine bases in Japan that hosted the U–2 spy plane: Oswald at Atsugi, Vallee at Camp Otsu.
Both had been involved with anti–Castro Cubans: Oswald in New Orleans, Vallee at a training camp at Levittown on Long Island, New York.
Both had recently started working at premises that overlooked the routes of presidential parades: Oswald at the Texas School Book Depository on Elm Street in Dallas, Vallee at IPP Litho–Plate at 625 West Jackson Boulevard in Chicago.
There were two other curious coincidences:
The tip–off to the FBI about the assassination plot in Chicago came from an informant identified only as ‘Lee’. In the first few weeks after the assassination, there were rumours that Lee Oswald had been a paid informant of the FBI.
Thomas Vallee was arrested at 9:10am Chicago time, having been under constant surveillance since the previous day. Five minutes later, at 10:15 Washington time, President Kennedy’s press spokesman, Pierre Salinger, announced that the visit to Chicago had been cancelled. The decision to cancel the trip had presumably been made several minutes earlier. The timing has led some commentators to conclude that Vallee was allowed to remain on the streets until he was no longer required to perform his unwitting role as designated patsy.


Beware of the man with one gun. He is a newbie