Shalom aleichem... unless you threaten me
The "American Jews" that I have known are by-and-large essentially peaceful people. I believe (don't quote me on this, because I have no stats to back me up - it's just my belief) that the majority of American Jews are either survivors who escaped Nazi Germany, the pogroms of Russia, or they are the descendants of holocaust survivors. Given their history since biblical times, I find their aversion to being surrounded by armed people understandable, even though I don't agree with it. There are also many American Jews who (as do their brethren in Israel) see the possession and bearing of arms as a birthright, just as there are many Americans of all religious and ethnic backgrounds who wish to eliminate the Second Amendment, including the delusional native-born Americans. The American Jew seems to be less "militant" (for lack of a better word) than the Israeli Jew. Is there a question in anyone's mind that the Israeli's are among the most peaceful of people, yet they are some of the fiercest warriors on Earth when provoked? What then, is the difference between the Israeli and the American Jew? The American Jew is the product of a faith that has in some ways been culturally "watered-down", perhaps in an effort to not be summarily rejected by the "goyim" (that's those of us who are not Jewish - the "gentiles"). The American Jew has also not lived in a country that has been under frequent attack since 1948, and perhaps has a diminished "survival instinct".
Most Jews, even the young ones, are familiar with the story of Masada and the Zealots. That is their history, and that was when their nation was taken from them by the Romans. I believe that most American Jews support 2A - especially those of the JPFO. Pax...