Are there many Israelis in the United States?

Visit Brighton Jew York ........... Ooops! I meant New York ..........  A Russian Spokeswoman once said "If you want to know about US politic you don't need to follow the US media .... just talk to the Children of God in Brighton cause they create the US politicians "

Define many.

According to Wikipedia, it's about 105,000-150,000.  Israel's population is between 8 and 8.5 million, so it is a noticeable percentage from an Israeli standpoint. However, MANY other nations have far more ex-patriots in our nation, and their presence is seen far more than the Israelis'.  If you go by Israel's definition of many, then I'd say yes; but, by the United States' version, my answer will change to a no.

Many Israelis are in the United States because Israel, while a successful and thriving nation, is small and that can limit opportunities for many talented people. For example, the United States has one Nobel from an Israeli who moved here because he couldn't get tenure as a professor in Israel, the competition was that fierce.