 Reporter Adam Cohen writing in 2006 in "The New York Times" agreed that the FBI surveillance of Lennon had been motivated not only by antiwar concerns but by concerns of a political nature.According to Cohen, what was most revealing was that the timing of these events suggested there was an underlying political motivation behind the surveillance and deportation proceedings.Numerous friends, including folk singer Bob Dylan, wrote letters to the Immigration and Naturalization Service advocating that Lennon should be allowed to stay.