Betty McCollum and Kathy Castor both explicitly called for Harris to step in. Probably others too. They are just two examples.

Not sure if it’s relevant how many are BIPOC, but at least some of the congress members who publicly called Biden to quit are. Including Gabe Vasquez, Marc Veasey, and Chuy Garcia. And according to reports, Obama is also trying to convince Biden to quit.

There is no doubt that many pundits and probably some of the congress members have a different fantasy candidate they prefer, but it becomes increasingly clearer Biden is unlikely to be replaced by anyone other than Harris. For several reasons.

1. Money. Harris have an access for 250 million dollars that any other candidate won’t have.
2. A contested convention would be disastrous for the Democrats. The only way to avoid contested convention is if Biden publicly endorses Harris. In this case, other likely candidates would be discouraged to join the bid.
3. The optics of skipping over Kamala Harris for a white man (or even white woman), would be really bad for the democrats. So bad that it would cost them electorally and they would risk loosing votes.

Respectfully, you turned my challenge on its head before pointing to any actual evidence of what you fear. The stakes could not be higher, so I understand the impulse to see something sinister when one vehemently disagrees strategically. Still, it’s a shame to quickly distrust all these proven defenders of democracy, accusing them of suddenly having petty characters. In fact, it is precisely their desire to proceed with great care that leaves them vulnerable to such attacks. When, say, Pelosi and Obama send obscure signals, they are trying to have an impact that, first, allows Biden to actually make the decision and choose the best “pass the torch” strategy, and, more importantly, one that doesn’t damage him irreparably should he decide to stay in. (Yes, he does continue to show openness to exiting, while necessarily maintaining he’s in until the end — I’d present evidence of this but my comment would get too long.) The fact that now the calls are becoming so much more explicate simply indicates people (who have heard a lot more of Biden than I have) are extraordinarily, deeply concerned. To diminish this concern as political positioning is to refuse to consider the writing on the wall they are desperately pointing to.

Anyway, the movement is called “Pass the torch,” which certainly suggests to Kamala, but it’s understandable that they would still be eager to resist spelling out all the details in public, to minimize palace-coup narratives, hoping the whole transition will be characterized as a unified, heroic movement to save democracy. The pressure is maximal now because the window for such a successful performative is fast closing. These people and I will do our best to support Biden if he refuses to budge, but we deeply fear the following months would be a steady drip of bad news cementing the electorate in cynicism and despair.

That said, here’s the type of statement I’d like to hear more of, assuming the calls keep getting more explicit. Rep. Betty McCollum, Minnesota:

“To give Democrats a strong, viable path to winning the White House, I am calling upon President Biden to release his delegates and empower Vice President Harris to step forward to become the Democratic nominee for president.”

There is no other viable option. But I tell you what, if you can show me some examples, not of fear, but of gross opportunism coming from the political ranks, then I’ll spend a little more time doing “homework,” as you put it. Meanwhile, my contention stands, that these fears are fueling unsubstantiated attacks against leaders who are continuing to place democracy first, second, and third during this unprecedented moment in history. For starters, you can see this partial list of statements, none of which suggests the slightest desire for a palace coup: https://apnews.com/article/biden-democrats-debate-convention-virtual-ac84492b500ab3fd972076b592113e5a
(I know this comment is long, but you did explicitly challenge me, so I’m trying to respond as accurately as I can.)