The Israeli TV news broadcast a lot of reports on US Jews making Aliyah. The widespread Israeli opinion is: Those Jews making Aliyah move to Israel due to Zionist reasons. However, they have to prove that they really want to stay and are able to make a living.
The truth of the matter is that a lot of new immigrants (Olim) return to the States after a while. Why? There is a variety of reasons:
The Hebrew language
The crazy Israeli mentality
People cannot find a job or make a living
Life in Israel is extremely expensive
Many Olim miss their family in the States or elsewhere. Especially grandparents miss their remaining grandchildren in the States.
Israelis say: “Lets talk about it after two or three years and see whether the new immigrants are still in Israel!”