American student visa vs. eu passport- help!

• I will be teaching in Spain under a student visa starting in October. I am an American citizen, but because my grandparents are Irish, I have applied for my Irish citizenship. I will most likely get my EU passport after I enter Spain with a student visa. Can I use my Irish passport after I get it even though I entered as an American citizen with a visa??

  10 Aug 2005, 04:59 Anonymous