John Hinckley Jr., 60, could observe the 35th anniversary Wednesday of his attempted assassination of Reagan from a luxurious community astride the 13th hole of a PGA championship golf course, complete with a picturesque view of a tranquil lake, an investigation by The Daily Caller News Foundation has found.

"This is absolutely so wrong. To let this guy go free. He almost killed the 40th President of the United States, coming within an inch of his heart," Jim Kuhn, top executive assistant to Reagan and first lady Nancy Reagan throughout their eight years in the White House, told TheDCNF.

Hinckley shot Reagan, press secretary James Brady, Secret Service agent Timothy McCarthy and police officer Thomas Delahanty March 30, 1981, outside a Washington, D.C., hotel. All survived, but Brady was left permanently disabled for life and died in 2014.

Hinckley's lawyers won a not-guilty-by-insanity verdict June 21, 1982, and he has been known ever since as an "insanity aquittee." The ruling triggered a national outcry about abuse of the insanity defense.