Yes, they work fine in USA and are just a few of the many free streaming services I use. There are others such as Crackle, Filmrise, etc. and many more such as free YouTube movies of my favorite oldies. I dropped my Netflix subscription as I found their commercials disgusting and did not care for their modern movies or actors. None of my favorite older actors were carried by Netflix, etc., etc.
I also have Screenpix for $3.00 a month and a member of Amazon Prime Video for $14.95 a month with good selection of new, recent and older movies and actors. I am doing fine without Netflix or HBO.