Publicly Nixon was suggesting he had no idea why the South Vietnamese withdrew from the talks. He even offered to travel to Saigon to get them back to the negotiating table. Johnson felt it was the ultimate expression of political hypocrisy but in calls recorded with Clifford they express the fear that going public would require revealing the FBI were bugging the ambassadors phone and the National Security Agency NSA was intercepting his communications with Saigon. So they decided to say nothing.The president did let Humphrey know and gave him enough information to sink his opponent. But by then, a few days from the election, Humphrey had been told he had closed the gap with Nixon and would win the presidency. So Humphrey decided it would be too disruptive to the country to accuse the Republicans of treason, if the Democrats were going to win anyway. Nixon ended his campaign by suggesting the administration war policy was in shambles. They couldnt even get the South Vietnamese to the negotiating table. He won by less than 1% of the popular vote.