A frozen embryo is not really "alive". Anywhere outside of a specific clinic in a specific container it would thaw and be destroyed immediately.

I know, where you are coming from, but counting a frozen embryo as alive is really stretching the meaning of alive.

Life is defined as "the condition that distinguishes animals and plants from inorganic matter, including the capacity for growth, reproduction, functional activity, and continual change preceding death"

None of these apply to embryos by themselves. Only when they're implanted do they gain the capacity for these things.

If you couldn't recognise the species even under a microscope, then no, it's not a person.

https://upload.wikimedia.org/wikipedia/commons/7/7b/Human_blastocyst.jpg

That's a human blastocyst.

Frozen embryos are from the the stage before blastocysts.

https://en.m.wikipedia.org/wiki/Embryo_cryopreservation

Cryopreservation of embryos is the process of preserving an embryo at sub-zero temperatures, generally at an embryogenesis stage corresponding to pre-implantation, that is, from fertilisation to the blastocyst stage.

I remember when as a kid in the late 90's, watching Stargate, I thought the US was cool. (Should've realised back then those were mostly Canadians in it, lol.) Now it seems like pure insanity over there.