JFK`s First 6,000 Days

Anybody remember this 1977 National Lampoon issue based on an alternative history in which Jackie, not Jack, was assassinated on 11/22/1963?

Key events included (as I vaguely recall — I can`t find the contents online, so this is not a quote):

1964 – JFK withdraws U.S. troops from South Vietnam, ensuring America will enjoy peace and prosperity. 

1968 – JFK sends U.S. troops to Northern Ireland to liberate the oppressed Catholic minority, setting off the British-American war of 1968-1973.

I presume P.J. O`Rourke, who is a Prod, came up with that one.

How much did the existence of the Notre Dame Fighting Irish help deflect natural Irish-American competitiveness away from the Belfast conflict (1969-1997) and toward beating USC?