What to do when visa admission expires during lockdown?

I was admitted to the US as a visitor for a period which expires soon. Until tonight, I had solid plans to return to Europe soon, prior to the expiration of the visa entry, but that is no longer an option. I do not wish to overstay or do anything that would cause problems with future admissions or visa applications. However, I can't go back to Europe because of new travel restrictions put in place by the US government (/resulting flight cancellations).

My passport still has years of validity left.

What is the best course of action?
Is there any official guidance on this subject?

I am a little concerned that contacting officials to explain the situation would just lead me to be flagged for prompt enforcement action, but I don't want future problems.

Related: Basically the same question, but for someone stuck in China.

Update: OP now planning an escape to Canada. The question still stands, though.