I am sure the US took note of this.
But you have yet to explain how the US
took note of it in regards to the bin-Laden raid,
before China ever made such a pledge to Pakistan.
Now initially I thought that that this was just Musharraf trying to justify his servitude in front of the Pakistani public until some senior members on this very forum explained in no uncertain terms to me that this threat was true and Pakistan could not but submit.
So I'm to believe that some vague, unnamed,
"members on the forum" are the definitive authorities on this issue?
How about we look at what we actually
do know about it. President Musharraff
only made this claim for the first time, in a single interview on the American TV show
'60 Minutes' years after the fact. And even he admitted in the interview, that he was only repeating what he had been told happened, in a conversation immediately after 9/11/2001 between a Pakistani ISI officer, and Deputy Sec. of State, Richard Armitage. When Musharraff was later pressed for details by other reporters, he repeatedly dodged the questions until he then claimed he was,
"unable to provide details due to restrictions by the publisher" of his upcoming book,
'In the Line of Fire'. Riiiiight. Richard Armitage, when he was questioned about the alleged incident, was utterly baffled and stated that while he
did have numerous conversations with Pakistani officials right after 9/11, and did repeat President Bush's,
"those that aren't with us, are against us." line, that his call to Pakistani officials were cordial, cooperative, and no threat at all, was ever made. President Bush, was likewise baffled, stating that he first heard of such a story, only when he read it in the newspapers, many years after 9/11. Colin Powell said that such a threat would not have been made in any event, as his calls, and others, reported that Musharraff's government immediately agreed to all seven items requested by the US government, of Pakistan, without conditions.
And btw, when Gen. Musharraff's book was published, it was most harshly trashed by the reviewers in Pakistan for it's multitude of self-serving lies, excuses, and inconsistencies.
https://en.wikipedia.org/wiki/Richard_Armitage_(politician)#Pakistan_and_the_fight_against_terrorism
https://www.pressreader.com/