Spain is part of the European Union and all EU and American nationals can visit the united states for a era of not than 90 days solely with a passport. EU country wide can observe for a residency permit in the event that they hope to increase their reside.

https://writeablog.net/milionkbxg/spain-is-part-of-the-european-union-and-all-eu-and-american-nationals-can

Spain is element of the European Union and all EU and American nationals can stopover at the u . s . a . for a length of now not than 90 days completely with a passport. EU country wide can follow for a residency