Except that I (and I believe it will apply to many folks similar to myself) working for US company branches located in the EU for a decade, on the staff/EM positions, with education to qualify also for O1 - will not put my life and my family’s life to be the subject of sudden immigration changes.

What’s stopping them from doing the same for L1/O1 folks and locking them in with days’ notice?

Few of my US colleagues that I know are now abroad, and I cannot fathom how they took the news.