What does the American green card category logo iro mean?

American green card category logo **iro** doesn't mean anything, because American green cards don't have this logo.

American green cards are generally divided into six types, representing different groups of people. Class I green card means that when the admission record is created, the fiance or fiancee of a foreigner enters the United States after concluding a valid marriage contract; The IR green card represents the parents, spouses, adopted children and orphans of American citizens, and American citizens and orphans will pass through American citizens.

The above contents are for reference only. For more accurate information, please consult the Immigration Bureau or the Embassy.