Why do people think that the USA supports israel?

It is because the US is controlled by Israel. There are Jewish lobbyist groups which have so much power in Washington, in addition to so many Jews in high levels in Washington that push the US government to be pro-Israel. In addition, any time anyone says something bad against Israel they are deemed racist or anti-semitic. Which of course is impossible to be racist against Jews, as they are a religious group and not a race. Anyone on the planet can become a Jew, regardless of race. And being anti-semitic would have to include all semitic languages, which includes Arabic.