Here is Klein: “Sometimes I imagine this era going catastrophically wrong — a nuclear exchange with North Korea, perhaps, or a genuine crisis in American democracy — and historians writing about it in the future. They will go back and read Trump’s tweets and his words and read what we were saying, and they will wonder what the hell was wrong with us. You knew, they’ll say. You knew everything you needed to know to stop this. And what will we say in response?”

And: “There are plenty of people who simply should not be president of a nuclear hyperpower, and Trump is one of them. This is a truth known by his staff, known by Republicans in Congress, and known by most of the country. That so few feel able to even suggest doing the obvious thing and replacing him with a Republican who is better suited to the single most important job in the world is bizarre.”

Related: Ross Douthat, Michelle Goldberg and Nick Kristof on removing Trump.

The tax bill. I heard from Senator Susan Collins’s office with an objection about yesterday’s newsletter. I disagree with the objection, but it’s worth sharing.

The tax bill that Collins may help pass would do substantial damage to health insurance markets. I wrote yesterday that she had dropped her insistence on other legislation to reduce that damage. Her office points out that she still strongly supports such legislation and has pushed for it with both Trump and Senate leaders.

That’s true. But Collins has also suggested that she would vote for the tax bill in exchange for verbal promises that Congress and Trump would later pass the other legislation. To me, that’s not insistence. It’s hope. Collins has the ability to insist that her vote depends on preventing damage to Americans’ health insurance. She isn’t doing so.

Also: The bills she favors would undo only a fraction of the damage that the tax bill would do, as Aviva Aron-Dine and Edwin Park explain, here and here. Unless Collins changes course, she is on the verge of harming the quality of health care for millions of Americans.

On the same subject, Fox News is refusing to air nationally a liberal ad that describes the ways that Trump and his family stand to gain from the tax bill, Politico reported yesterday. You can watch the 30-second spot, titled “Billions,” here.

More firings for sexual misconduct. It isn’t just feminism that has brought down Garrison Keillor, Matt Lauer and others; free markets have also been crucial, writes Elizabeth Nolan Brown in The Times. In the internet age, “corporations are susceptible to the moral suasion of the public,” she writes. “For better or worse, we’ve all become remarkably effective at mobilizing it to our own causes.”