However, on Nov. 2, Johnson learned that his protests had not shut down the Nixon operation. The FBI intercepted the most incriminating evidence yet of Nixon's interference when Anna Chennault contacted Ambassador Bui Diem to convey "a message from her boss (not further identified)," according to an FBI cable.
According to the intercept, Chennault said "her boss wanted her to give [the message] personally to the ambassador. She said the message was that the ambassador is to 'hold on, we are going to win' and that her boss also said, 'hold on, he understands all of it.' She repeated that this is the only message ... 'he said please tell your boss to hold on.' She advised that her boss had just called from New Mexico."
In quickly relaying the message to Johnson at his ranch in Texas, Rostow noted that the reference to New Mexico "may indicate [Republican vice presidential nominee Spiro] Agnew is acting," since he had taken a campaign swing through the state.
That night, at 9:18, an angry Johnson from his ranch in Texas telephoned Dirksen again, to provide more details about Nixon's activities and to urge Dirksen to intervene more forcefully.
"The agent [Chennault] says she's just talked to the boss in New Mexico and that he said that you must hold out, just hold on until after the election," Johnson said. "We know what Thieu is saying to them out there. We're pretty well informed at both ends."
Johnson then renewed his thinly veiled threat to go public. "I don't want to get this in the campaign," Johnson said, adding: "They oughtn't be doing this. This is treason."
Dirksen responded, "I know."
Johnson continued: "I think it would shock America if a principal candidate was playing with a source like this on a matter of this importance. I don't want to do that [go public]. They ought to know that we know what they're doing. I know who they're talking to. I know what they're saying."
The President also stressed the stakes involved, noting that the movement toward negotiations in Paris had contributed to a lull in the violence. "We've had 24 hours of relative peace," Johnson said. "If Nixon keeps the South Vietnamese away from the [peace] conference, well, that's going to be his responsibility. Up to this point, that's why they're not there. I had them signed onboard until this happened."
Dirksen: "I better get in touch with him, I think."
"They're contacting a foreign power in the middle of a war," Johnson said. "It's a damn bad mistake. And I don't want to say so. ... You just tell them that their people are messing around in this thing, and if they don't want it on the front pages, they better quit it."
A Worried Nixon
After hearing from Dirksen, Nixon grew concerned that Johnson might just go public with his evidence of the conspiracy. Nixon discussed his worries with Sen. George Smathers, a conservative Democrat from Florida, who, in turn, called Johnson on the morning of Nov. 3, just two days before the election.
Smathers recounted that "Nixon said he understands the President is ready to blast him for allegedly collaborating with [Texas Sen. John] Tower and [Anna] Chennault to slow the peace talks," according to a White House summary of the Smathers call to Johnson. "Nixon says there is not any truth at all in this allegation. Nixon says there has been no contact at all. ... Nixon told Smathers he hoped the President would not make such a charge."
At 1:54 p.m., trying to head off that possibility, Nixon spoke directly to Johnson, according to an audiotape released by the LBJ Library.