Richard Nixon actually said...

I won't speculate on what South Vietnam may decide to do with regard to a possible incursion into North Vietnam in order to defend their nat...

The proposals are made necessary by the dramatic changes which have taken place over recent years in the conditions that surround and influe...

Any decision that called for American participation would have to be approved in Washington.

I will not allow those forces to be endangered by a massive North Vietnamese incursion, if one should be undertaken.