Why is Bush so silent now? If he cares about the country, a statement critical of Trump's misdeeds and the vitriol he has created would help. I don't know how much, but it would help. He has nothing to lose politically at this point. How can someone in his position just stand by and watch what is happening without at least trying to do something?
It's traditional for former presidents to stay out of the limelight.
Bush would probably have been willing to let stand the comment he made about Trump upon departing the inaugural ceremonies of 2016. With reference in particular to Trump's inaugural address, he apparently said at that time: "that was some weird sh^t."
In fact though, there are a few times that Bush has subsequently cast shade on Trump publicly, but not by name, usually referencing disappointment in the Republican Party's direction, or sometimes talking about the change in how Americans relate to each other now. For example when he was giving a speech in Pennsylvania on the 20th anniversary of 9/11, his remarks included these words:
"In the weeks and months following the 9/11 attacks, I was proud to lead an amazing, resilient, united people. When it comes to the unity of America, those days seem distant from our own. A malign force seems at work in our common life that turns every disagreement into an argument, and every argument into a clash of cultures. So much of our politics has become a naked appeal to anger, fear, and resentment. That leaves us worried about our nation and our future together.
I come without explanations or solutions. I can only tell you what I have seen.
On America's day of trial and grief, I saw millions of people instinctively grab for a neighbor's hand and rally to the cause of one another. That is the America I know.
At a time when religious bigotry might have flowed freely, I saw Americans reject prejudice and embrace people of Muslim faith. That is the nation I know.
At a time when nativism could have stirred hatred and violence against people perceived as outsiders, I saw Americans reaffirm their welcome to immigrants and refugees. That is the nation I know.
At a time when some viewed the rising generation as individualistic and decadent, I saw young people embrace an ethic of service and rise to selfless action. That is the nation I know.
This is not mere nostalgia; it is the truest version of ourselves. It is what we have been -- and what we can be again."
Of course that was more than just a rebuke to Trump, it was a call to Americans to rethink their part in whatever has come to divide us so harshly. But Trump clearly took it for what it was, and lashed out at Bush after the speech:
"He shouldn't be lecturing us about anything. The World Trade Center came down during his watch."