Question about American going to nursing school in Philippines to work in usa?

Waste of time & money. Over 80% of the nursing school graduates from the Philippines fail the test to work in the US.
You will be better off going to nursing school in the USA. The hospitals would prefer to hire a person that went to school in the USA than here

What about it? You do have to write the board exam to qualify to work when going back to the USA. It is much easier to study in the US and work straight away.