Blackrock does not get to do whatever it wants, with OTHER PEOPLES' MONEY.
No, Blackrock does whatever people want with their money. That is the service they offer. If you do not want one of Blackrock's funds, they have many others. If you do not like any of Blackrock's funds, they are fine with you investing with someone else.
Do you see how that works?
They are entitled to direct how their money invested, and Blackrock has been caught investing in failing ESG bullshit, thus endangering their clients' monies.
Caught? They advertised the fund. If you want to invest in the ESG fund, then you are taking the risks (and rewards) from it. Blackrock is willing to help you in your decision.
Mississippi will likely sue them for $billions.
I am sure that Mississippi will sue Blackrock for billions, if not trillions or even zillions or dillions. Zillions and dillions is not even technically numbers, but that will not stop Mississippi.
The next question is what will be their cause of action? It appears to be that Blackrock offered an investment fund that Mississippi does not like. The more legal solution is that Mississippi does not need to invest in that particular fund, or in any fund that Blackrock offers.