Subject: Re: Obama still hoping for another candidate
Replying again, apparently Obama's endorsement is expected to come later today:

https://www.politico.com/news/...

Per the article, Obama is attributing the timing to what we discussed upthread: he didn't want to be seen as directing the party's choice of nominee. Not that he has any qualms about Harris, or wanted someone else:

But the wait before endorsing was intentional. A person familiar with Obama’s thinking said he didn’t want to put his thumb on the scale as the party worked through the process of determining its nominee.

“He believed it was important for the party to have a legitimate process where delegates select our new nominee, and he thinks VP Harris has been off to an impressive start,” the person said.