KatieMI

This is not question about being "bad" or not. It is a question of your future value as advanced specialist, and, whatever specialty you are going into, this value is determined by your level of expertise. Since specialties like IT, QA, education and such are "generic" and prepare every specialist appoximately the same level, the value of each such specialist is at large determined by what this person ALREADY knows - in other words, his/her past RN career.
From what I see, it makes sense to squeeze everything possible from one specialty before making a jump into "advanced". All possible certificates, education, skills, most advanced experience available - it all will one day or another work for the future. Fleeting experiences here and there add, too, but by far not that much.

You do NOT need any "original" license from any country to practice nursing in the USA. You need a license granted by a state where you are going to practice.
The Boards of every state have their own, slightly different, processes for foreign nursing grads. They might want to see documents about your education, like your foreign diploma. But they won't need your "original" license.
If you are already on CGFNS conveyor belt, just follow their instructions. If not, go to CGFNS International, Inc. | Global Credibility |
then go through motions. Some states are more difficult to get into, California being thought to be the worst one.