Why do you think that? Germany didn't even protest when it was revealed that the USA spied on the phone of chancellor Merkel, the BND sent siphoned german internet traffic to the NSA in an act of treason, and flight passenger data is sent to the USA without receiving such data in return. And again and again the EU enables data transfer programs into the USA, even though it is known the USA does not protect that data from access and that thus all such agreements are illegal.

In such questions, European states repeatedly bow completely to the USA. I don't see why it would be different with Spain.