How many exactly have you met? And how well did you get to know them to be able to judge them? You are a brother and a respectable one too- it is obvious you will not have had many dealings with them. Maybe you met a few (less than 5-10...?) under controlled situations (marriage proposals etc) but to make sweeping statements about all American Aalimahs is not wise or fair. As sis sudoku says, there are good and bad in every group.