In Israel it is difficult for American olim as many KP products contain kitniyos.
One of the solutions proposed by some poskim is logical, The whole issue surrounding kitniyos arose because of life in agrarian Europe hundreds of years ago. It was difficult to distinguish raw chometz from kitniyos and the fear was chometz might have gotten mixed in.
With todays processed foods, that have valid KP hashgas, that concern no longer applies. Often, the only way you know that kitniyos is in the processed product is by the label. They have said that these types of processed kitniyos can be eaten by olim. It’s logical and makes sense